This isn't the best recommendation*, but I've personally had no issues with tons of devices and a large two building layout with 4 Google Wifi pucks.
- I gather that some of the other mesh solutions like Eero work better but I've never used them.
leros
joined 10 months ago
The Roborock vacuums can work without wifi but you lose the advanced functionality. Apparently you can flash them with an alternative firmware and get back the advanced functions with local only control.
If money was no object, maybe conduit going from every room to a central place so you can easily run whatever you want in the future.