A simple question that deserves a simple answer, but your not going to get it unfortunately. I’m still looking for it at least, or trying to create it if I don’t …
For switches, I started with smart wifi lights for our bedroom, wired the light switch as always on (just connect the load to line) and put in a blank switch cover. It still hasn’t went over well, with the wife (and me, honestly) having to OK google turn on the damn bedroom light, turn off the light, etc etc - It’s a bit much. Tried motion sensors, device trackers, and circadian lighting to try and automate the lights to work when needed, but finding you just need a switch or light, especially when you have guests that are having to use the lights. I guess what I’m saying is switches are needed, which, brings me to other switches that I’ve replaced in the house…if it’s a single pole (just one switch, not a 3-way) your good to go, as it could get complicated. I actually got rid of some of the 3-way lights since it wasn’t even needed in a few places. I’ve also went with z-wave throughout for the light switches and dimmers. The light switches we use are,
I’ve thought and looked into replacing the switches with WiFI ones, they are cheaper, but haven’t found any that work locally, support something like mqtt, support dimming, and basically play well with home assistant. I’d like something that would be able to control a smart WiFi light, since using a z-wave switch and WiFI light doesn’t seem to work, once you turn off the switch, the WiFi light loses state and has to be reset. I have found WiFI lights to be more reliable, so this is one I’d like to figure out. Which is something you may want to think about, are you planning to have simple lights or you want something more jazzy that you can control with colors?
If there was a solid WiFi switch and dimmer that worked seamlessly with HA, local, mqtt etc and worked out of the box (Tasmota firmware looks cool but all I see is more time than I want to spend hacking on light switches) - I’d totally go for that. WiFI switches are way cheaper ($15 vs $50 for z-wave) and any unreliability encountered can be fixed with juicing up your wifi network with mesh or amplifiers.