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.

Here are a few ideas for upgrades that could modernize your rental property and potentially increase its rental value:Update the kitchen: Upgrade old appliances, replace countertops, and add a tile backsplash.Install modern lighting fixtures: Replace old, outdated lighting fixtures with newer, more modern options.Add a fresh coat of paint: Choose a neutral, modern color that will appeal to potential renters.Upgrade the bathroom: Install new fixtures, replace old tiling, and add a new vanity.Update the flooring: Replace old, stained carpet with wood or vinyl flooring.Install smart home features: Add features like a smart thermostat or smart lighting to appeal to tech-savvy renters.Improve curb appeal: Add new landscaping, repaint the exterior, or add outdoor lighting to make the property look more attractive from the outside.Remember to keep your target renter in mind when making upgrades, and make sure the cost of the upgrades will provide a reasonable return on investment

New roof, new flooring, renovated all three bathrooms, new paint interior and exterior, new SS appliance suite, new lighting, new front storm door, xeroscaping front yard, new water heater, new concrete backyard patio and wood deck, new garage door opener, and programable thermostat.

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.

I installed a wifi thermostat hardwired to the boiler system in the basement.

The smoke alarms, carbon monoxide, and thermostats, as well as an alarm in the basements to let us know if there is water detected. 

Open to ideas.I can tell you, the Nest Thermostats in my home save me about 150 - 200 bucks a month then my previous programmable thermostats.

I also use an Amazon echo that interacts with those smart switches and the thermostat so guests can even query thermostat temperature or change the temp via Alexa. 

Everything else can be handled remotely - keyless entry, Wi-Fi thermostat.