Request that they leave. 

More and more people were speaking up about projects exceeding deadlines, ignored withdrawal requests or delays blamed on COVID, family problems, city slowness, ...Instead of taking responsibility, Sief decided to play the victim card and blame everything on Brian, who most of us never met.

Luckily for you, the city is currently accepting Vacation Rental Permit Requests.

Main things we are looking for are:1) Are residents keeping property in decent shape2) Any leaks or issues that could lead to substantial damage3) Any capital repair concerns (mostly foundation) that we might need to address4) Long term guests who aren't on the lease, pets who they're not supposed to have, etc.We also change the furnace filters (because we don't trust them to do that), clean off the AC units and are considering cleaning the gutters for an added fee if tenants request it. 

I found this realtor by simply talking to lots of different realtors and requesting their assistance with my situation.

Then surprise her with request to have her show you her kitchen, bathroom and living room. 

Can anyone recommend a third party phone/answering service that can field and respond to maintenance requests from tenants?

She did request I change out an outside light fixture. 

Because you have one of them on M2M, that gives you the opportunity to raise rent, request an application from the tenant, put your lease in place with your terms, etc. 

The tenant is requesting the return of their last month's payment and security deposit (equal to one month's rent).