Smart door locks are a must in my opinion!
These tools will help you remotely manage the heating and cooling in your rental.
You can use these tools to help you monitor the noise levels in your property so you can tell your guests to quiet things down if they are being too loud (gotta keep the neighbors happy!)
I've only ever used Ring cameras in my properties and I've had an excellent experience with them so far! I prefer the flood light version personally.
Consider getting a different phone number to keep your personal number private!
Here are some other helpful tools & resources to systemize your process of keeping your property safe.