How should the guesthouse be connected to the internet? Guests need to isolate their WiFi, change passwords when switching guests, and unlock doors even when disconnected. I helped my friend check all four rooms
Old Tang was my high school classmate. Last year, he converted his three-story house next to the scenic area into a guesthouse, with four guest rooms plus a floor for personal living. In the second month after opening, he forwarded me a negative review: "WiFi connected but couldn't swipe, the door lock wouldn't open at midnight, and I stood at the door for twenty minutes." With just this one item, the monthly rating was dragged from 4.9 to 4.6. I went up the mountain to help him review everything from the beginning, only to realize that the network for running a guesthouse and the network at home are completely different—guests would mess around with equipment, frequently change hands, and even face a legal barrier. This article will lay out what Lao Tang helped him sort out.
first break a net into three rings: the guest's, the home's, and their own
Old Tang's original connection method was the simplest: a WiFi name, a password written on the bedside card, and the guest connected to the same network as himself. This is like sending the house key and the room card into one hand—once the guest's phone has a file browser installed, they scan the local area network, and the backend addresses of the door lock, gateway, and camera are all exposed.
the correct approach is to break it into three rings. Guest Circle Visitor Network: Open a guest WiFi in the main router, name it Homestay Name + Guest, and connect all guests to this network. The visitor network is inherently isolated from the main network, so guests can't sneak into the backend of locks and cameras, nor see the host's phone. the main network: door locks, cameras, and these devices never touch the mainnet, pinned to the mainnet, holding the passwords themselves. your own is also the main network, but be cautious between your phone and camera, and don't set the backend password together with the WiFi password.
How to enable
Guest Network varies by company: Mercury can find Guest Network in the advanced wireless settings and activate it in two steps. I once wrote an article complete Mercury Guest Network setup ; Tenda's advanced version allows remote switching and scheduled shutdown in the app, which will be useful later in the customer exchange section. Details are Tengda Visitor Network article. Xiaomi's Zoumi Home App Toolbox. The Tang family ultimately chose Tengda, relying on its ability to keep time.
| Circle | Who is using it | which network is connected to | password, and who cares about |
| guests' circles | guest phones, The TV box | visitor network | each time you switch |
| the | door lock, camera, gateway, | mainnet (which is pinned to the ground) | landlords |
| their own circles | hosts use their phones, laptops, | mainnet | landlords themselves |
three key tasks on the day of the customer exchange, missing one left a hole
long-term rental houses require a key change once a year, and during peak seasons, guests change daily. Old Tang once suffered a loss: after a customer checked out, he didn't change his WiFi password, and half a month later, his phone popped up with an unfamiliar device online—the previous customer was still watching videos from his home network in a restaurant halfway up the mountain. Since then, I have fixed the customer exchange day into three things, writing them on the first line of the cleaning process.
the first item: guest WiFi password is for each transaction. Don't mind the hassle—just change it in the app for ten seconds. Never use a WiFi master key to connect to your own network. That kind of app will share the password, and changing it ten times would be useless. I mentioned the same logic in my about camera privacy self-check—you never know who copied your key.
the second item, set the temporary password for door lock individually . Lao Tang uses a smart lock with a temporary password function. The app generates a limited-time password for each customer, valid from 2 PM on Friday to midnight on Sunday. Check-out automatically expires, and a new one is generated for the next order. This feature should be clearly asked when buying a lock. I mentioned before how to choose a smart door lock that in homestay scenarios, it's even more important than fingerprint unlocking—guests don't have fingerprints; the password is the room card.
the third item, bedside card with code and diagram . Just writing passwords can easily lead to mistakes by customers; l and 1, O and 0 on the phone, are just mystical. Make WiFi QR codes printed on bedside cards, and guests can scan to connect—much more dignified than reading passwords. The QR code method is in the of the WiFi password sharing post. On Android, the share button directly outputs the code, saves it and takes it to a print shop for plastic processing, costing a dozen yuan or so for a lifetime.
guests have a legal threshold for WiFi—don't be like a small supermarket that just shuts down
this segment was completely unexpected for Old Tang. Previously, I helped the small supermarket downstairs set up internet access, and the final conclusion was to simply turn off the customer's WiFi—because providing WiFi in public places is considered public internet service according to the Cybersecurity Law and Ministry of Public Security Order No. 151, which requires two things: first, real-name authentication for internet access, which cannot be used by anyone who connects and must verify phone numbers; Second, internet logs should be kept be kept for no less than six months according to Article 21 of the Cybersecurity Law. Small supermarkets can't handle this trick, so closing it is the easiest way. I've written this in the on how to connect store networks.
guesthouse just can't be closed—guests who can't connect to WiFi after checking in are already a bad review. So the homestay hurdle can only be crossed head-on, with three paths. The most reliable method: when applying for broadband, just call 10,000 and clearly state it's for homestay or shop use. Ask if you can use commercial WiFi or real-name authentication plans. Many regional operators have ready-made shop packages, and the verification page will pop up a phone number verification code when the guest connects to the internet. Second: Buy a commercial router with Portal certification, which comes with a verification page and logging features. The entry-level model costing one or two hundred yuan is already available. The third is transitional: if the guesthouse is small and locally can't find a specific plan, at least keep this in mind and keep records of proactive consultations. Being checked carelessly is a different matter.
Old Tang made a trip to the service center. Locally, they can offer broadband and authentication for shops, costing just over twenty yuan a month. His exact words were, "Spend money to buy a worry-free life," and I think that's reasonable.
bedroom can't have a single camera, including your own one
the red line of installing surveillance cameras in homestays is much clearer than at home. Public areas—doorways, yards, and first-floor living rooms can be installed or recommended, so disputes can be traced in case of disputes; But neither the bedroom nor the bathroom has a single , and the landlord has the same setup. This isn't a platform rule—it's a matter of criminal law: In Hefei, there was a case where multiple rooms in a guesthouse were installed with pinhole cameras for long-term live streaming. The person who installed the camera was criminally detained, and even the operator was found guilty of obvious fault for neglecting inspections for a long time. The charge of secretly filming is a real sentence.
there's another twist that many people don't expect: just because you don't pretend doesn't mean the room stays clean. It's not a joke that after guests check out, the room is empty for a few days, and the former guest secretly inserts a pinhole inside. Operators are obligated to conduct regular inspections, and the inspection locations are marked as follows: smoke detectors, socket panels, decorations directly facing the bed, and next to the router. Use your phone camera to turn off the light and scan around; the small red dot in the infrared supplement light will be exposed. How to set up cameras at the entrance and in the living room to prevent being spied on—I wrote about the home-use method in my camera self-inspection . The guesthouse just copied it, but the location list was changed to the guesthouse.
people aren't on the mountain, how do you save them when they're paralyzed
Old Tang usually lives in the city, so the guesthouse is left to the cleaning staff by the aunt. Network devices always fail when no one is around: routers crash in the middle of the night, customers can't connect to WiFi the next day, and even remote passwords for door locks can't be issued. I once wrote about the idea of remotely repairing the network for my parents' homes helping my mom remotely manage the router , and the homestay just copying it requires two extra layers.
the first layer, door locks must be disconnected and still open . When selecting locks, ask clearly if there is an offline temporary password: better locks have built-in clock chips, and the limited-time password generated by the app can be verified locally. Even if broadband is cut off, customers can still enter the door with their password. This technology isn't just a gimmick; Airbnb officially offers a backup password for offline locks. Old Tang's midnight negative review was ultimately covered by this feature—the broadband area malfunctioned that night, the customer entered with an offline password, and the next day the internet was restored and everything was normal. Another reminder: nine times out of ten, a smart lock offline is not broken; it's due to power saving sleep and network mismatch. Replace the battery first and then check the signal—don't rush to disassemble it.
the second floor, equipment must be hidden out of reach of guests. This is a unique pitfall of guesthouses: no one at home will poke your router with a needle, but the guesthouse will—kids get curious, adults complain about the flashing lights, and with a reset hole, the whole house is reassembled and restored. Old Tang's optical modem and router were now locked in the low-voltage box on the first floor, and he kept the keys himself. I also added a scheduled restart, which automatically restarts at 4 a.m. every week, reducing inexplicable lag by half.
bandwidth account and the acceptance form before opening
let's calculate bandwidth. The peak internet usage in homestays is at night. Each guest returns to their room with a phone to watch videos. 1080P videos are 5 to 6 Mbps per video, and if four rooms are fully occupied with eight devices, 50 to 60 megapixels is enough; If someone casts to 4K screen, I add about 25MB along the way. Calculating this way, 200 Mbps is the baseline, 300 Mbps has a margin. Old Tang's original 100 Mbps broadband line—it's no wonder it lags at night during peak season. How do you calculate the household broadband bill by headcount? I wrote detailed in the broadband installed, and the guesthouse just doubles the number of people to estimate—guests won't save money for you.
Before opening,
review this form before putting it on the shelves:
| acceptance items | how to verify | cable passing standards |
| three circles of isolation | mobile phone connected to guest WiFi, Scanning the local area network | cannot see the door lock or camera |
| customer exchange process simulates a checkout order | old WiFi password cannot be connected, and the old door lock password is invalid | |
| network disconnection drill | unplug the optical modem power supply | the offline password can unlock the door, and the whole house automatically restores when called |
| with remote management | can operate the app in the city | can restart the router, send temporary passwords |
| camera locations | pass through rooms one by one | bedroom and bathroom with zero cameras, and there are notifications in the common area. HTML180__ |
| WiFi compliant | ask the carrier or check the router | real-name authentication is enabled, but the logs are saved |
Old Tang handled the matter as is, and for the next four months, there were no more negative reviews online. Looking back, the internet for homestays has three main tricks: separating guests from their own people, keeping passwords with orders, and even if the internet is cut off, guests can still get in. These three points are firmly established; the rest are just minor tweaks. Landlords who want to rent to long-term tenants have different network configurations. I wrote about that in the of rental housing, and reading the two side by side makes it clearer.
