If we were able, I would use one of those electronic lockboxes instead - the type where the guest punches in a code and then the door unlocks, rather than having a physical key - but it wasn't in our budget.Another key hire for renting from a distance hire would be a local handyman to handle any emergencies that come up while guests are staying there.

We unlock the door, and open in 3 inches - and the door chain is across the door.

If you want to have both, you could leave a key inside the unit (key the knob and deadbolt the same), lock only with the deadbolt between guests, unlock for them remotely and then have the guests use the key after check-in...but you're likely ok.

I'm thinking of refinancing in order to unlock some cash.

I would send a letter to all tenants reminding them of the common courtesy of the neighbors and noise - reference the section of your lease if that's in your lease as well as notifying them of the new hours to the laundry once you decide on a resolution.I would look into a timed door lock which locks automatically at a certain time and unlocks at a certain time.

Pay or quits should be posted on the door,, take a photo,, I personally tape it right over the door lock so If I return I know they got the notice because it had to be removed to unlock the door to enter, I don't put it under the door..Email for notices is not always permitted for proper notice ,so check your state laws on that.  

Well, I've had a few handymen give me quotes who were referred (mainly from selling agents) and their project quotes were ridiculously high.I also happened to work with both handymen when I had first hired them; partially because I had to unlock the place for them and partially because I wanted to learn how to do the repairs myself.

Even if something bad does happen, I'm so far money ahead on this strategy I'm never going back to the old method of dropping everything to run over to a place and unlock it just so people can text me 15 minutes after their appointment, "Sorry, but we're not coming...." 

It is quit nice having a separate scheduled code for each guest / tenant.The other lock / wifi hub app only allows me to lock and unlock the bolt remotely.

He would never give me a time to meet and suggested I leave the door unlocked or give him a key.I said fine I'd give him a key but asked him to please don't let the pit bull out.