We are considering doing a detached garage with an RV stall. So- my question is: what feature(s) should I include in the build? Some I've considered were: 220 power, a large sink (don't need hot water...
Also, if you install a sink, but don't want to do a full blown water heater, Home Depot has instahots that mount under the sink that will run on a 15 amp circuit.
Also, rather than leaving a light on 24/7, you can install one on a motion switch so as soon as you walk in the light comes on.