On a similar note, it seems like so many STR hosts, posting on this forum, do Instant Book and are otherwise very lenient with who they allow to rent their property and "never have any issues". 

We rent out the bottom unit LTR with long term tenant and are looking to move out of upper unit and make it a mid term rental.

I've been a real estate investor for 3 years, at first it was going to be buy and flip but I re-evaluated my markets and changed to rent and hold.

In reviewing the current inventory, both for sale and for rent, it appears that there is an excess of homes available in the area.

Signed a month to month lease and took the lease and the first months rent to the bank.

If your income come mainly from W2s and one rented property you should not have any problem with doing it yourself.

Rents keep increasing at incredible rates.One of the few profitable markets in Spain

My back up plan if it doesn't sell is to hang onto it and rent it out, but I don't think it should have a problem selling.What is the best way to handle this?

Can I cut her water and just say I dnt have money to pay since she hasn’t paid the rent. 

One additional item is that I am planning to move out of my current residence no matter what, so will need to rent/buy for that.