Last I heard major airlines had cancelled 90% of their flights. 

I agree overall with the sentiment that $100/door seems slim, but as @Mike Dymski stated evaluating cash flow in a vacuum is not how it should be done.  

Side note, if you fly into Tampa, check out Allegiant airline that flies into Clearwater/St.

I had gone to flight training in 1999-2003, and my plans were to get my certificates and ratings, and a college degree, and then go to the airlines.

The carpets are dirty... who is going to vacuum?

This is very time consuming, every surface must be vacuumed with my HEPA certified shop vac (not just a HEPA filter in a normal vac.

Alternatively, you can also use "total assessed value", which as we know is not indicative of much in a vacuum, but in regard to neighboring properties, you can compare apples to apples (for the most part). 

The other 30% are a mix from Marriott Homes and Villas, JetBlue/Allegiant Airlines, Google Vacation Rentals, Booking.com, out direct booking sites etc. 

Never put in carpets for an example, as no one will buy a vacuum.

Condo fees, as a general rule, are cash flow vacuums.