Got a Honeywell T9R which is a bit annoying as the R means it's got a stand and I can't be arsed figuring out ways of getting it to sit on a wall out the way.
Also although connected to Wi-Fi it doesn't have batteries so isn't very portable.
The app is rather functional and the geo-location doesn't work with modern phones that like turning location off, but given I need the heating to fire up when I'm 20 miles away in order to get the house comfortable for my arrival and I work 19.98 miles away I just use the scheduler and over rule it with a minimum of 10c when I'm proper out.
Alexa can apparently be taught how to speak to it but given Alexa only just managed "Turn on PC" and can't do "Turn on HiFi" or "Turn on Telly" without asking me what I mean ah hink ahve foond ger limit eh.
Had a scope around with thermometer at lunch, the ethernet port faceplate is at 12c, the radio aerial outlet next to it is also at 12c, the 2 gang power socket is at 15, the plaster board next to them is at 15, the power socket has been painted in, the other 2 have not, hm.
The plaster board above the desk is at 18, head height 19, and drops down to 15 at skirting level.
Wonder if I should just put the room thermostat on the floor, the smart meters are buggerd anyway so I can't see the impending fright coming. (Except i've discovered I can see my leccy bill on that meter)