We just started hosting 3 weeks ago. We use a smart lock (which everyone loves), Alexa (for smart lights and as a speaker), Ecobee thermostat, Misfit Bolts (with smart tabs on nightstands for remote light control in the bedrooms), security cameras, and motion controlled lights (not Internet connected). The next step — smoke and flood sensors, so we could go on vacation without worrying about it. It is not something we push onto our guests. But it adds convenience and functionality for those who want to try.