We have ring doorbells/floodlights, august smart locks, noise aware for outside noise monitoring, and nest thermostats in all of our units.Also, if you can, speak to the neighbors and introduce yourself.

Today she informed me that her son in law changed the thermostat in my unit and claims the neighbor next door has control of her furnace(not possible).

Get some Chicago control thermostats and you are set.

Like the idea, you have thermostat on outside hall wall so wiring for that is consideraton as well as light switch on oppsite side for kitchen.

I used youtube yesterday to test water heater thermostats and elements. 

I use the biological method with my thermostats.

The thermostat should beadjusted so the water temperature doesn't exceed 120 degrees. 50) No sediment trap is installed on the water heater gas supply line.

Mine can set door codes, message (or call) guests, schedule cleaners, adjust the thermostat, monitor my cameras, & call a plumber just as easily as a local PM can, for 1% of the cost3) Hire good cleaners, a solid handyman & befriend some helpful neighbors.

I have also a list of common issue and trouble shooting procedure that I provide to my new tenant such as: garbage disposal, water heater, thermostat, garage door sensor, etc.2. 

With one app I monitor security, thermostats and locking my doors from my smartphone.