Transparent pricing and financial reports are also important, as is understanding whether their management fees are charged before or after listing fees and taxes are taken out.A good property management company will also look for ways to streamline your guests' experience, such as by recommending smart locks and thermostats that make it easy for guests to access and enjoy your property.

Another thing is use is an air freshening system that we can use remotely, same access sort of deal with out thermostat. 

Ideally I would (if I buy it) put in two gas meters but if that's not practical, is there a thermostat that is set at 70 deg but the tenant can turn it off or on but not adjust the temperature?

@Blair Poelman, how do I go about putting them on a thermostat?

If I tried to be a Realtor, was showing a home, and someone told me the kitchen didn't "feel warm," then I'd turn up the thermostat, declare the problem solved, and tell them to write an offer or GTFO. :) That sort of approach works for mortgages where it's a number you can quantify and exactly measure, but not for being a Realtor where it's an aesthetic and a feeling. 

They have subliminally an internal set financial thermostat in their mind and recede once they hit it .

He has recently started doing personal jobs on the side but is new to the business part of it.He went to a unit and replaced an outdated thermostat, fixed a light fixture that was hanging, and sprayed WD-40 into the units entrance lock because it was giving the tenants some trouble.When we got the invoice, he charged for 45 minutes of labor but also charged an extra $30 for additional fees and had no further description.

The second day in, they realized that the house was not cooling to the temperature they had the thermostat set at (mind you we're experiencing a 100+ degree heat wave this summer and summers here are always hot); however, the house felt cool and the HVAC folks checked the unit and everything was running accordingly. 

That way, you can just give 30 days notice to end a tenancy, as well as 30 days notice to change any rules, etc.The things that usually wreck roommate situations is unwanted guests, not cleaning up after themselves, messing with thermostats, stealing food.Some of those things can be pretty easily dealt with - like including a weekly cleaning service in the rent, putting little apartment fridges in the rooms.But, inevitably, there will be a roommate who you will want to get rid of, so having month to month agreements is the easiest way to get rid of them.  

If I plan on doing anything that would inconvenience them (paint the porch, replace sidewalk) I let them know 'way in advance.Twice a year, I change all the smoke/CO alarm batteries & double-check the thermostat batteries.