Some states are very clear that the buyer can have access for specific essential inspection purposes (measuring for furniture not being essential) and others are wide open and allow the buyer access for anything with proper notice to the seller.

Gifting is legal, but has to be properly declared to the IRS. 

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

Maybe anonymity benefit if you setup the LLC properly.  

Up until now they have been model tenants that were properly screened.

A lot of water damage to the entire subfloor, the bathtub was tiled, but not sealed properly and black mold was around almost all of the grout.

That can amount to a significant out of pocket if you don't properly insure it. 

Check the manufacture commercial warranty.

@Wayne Brooks, well for one I think that it is not being properly managed, as mentioned there are several foreclosures on the properties within the HOA. 

If they don't corporate then you need to get a judgement and start proper collection procedures.