IF you plan on going back someday, and this is the home you want to move back to, then renting it would be a good idea as long as you estimate that it will cover itself, or preferably, cash flow, which it appears that yours will at @ $2K or so per month (after expenses). 

The rents pretty much never seem to cover the mortgage costs, even with low interest rates.

Covering this with my salary is relatively comfortable.  

This is because they're much more expensive than other countries in the region and, unlike in some other countries in the region Costa Rica doesn't have the mass tourism needed to get you the rental income that would justify those prices.This being said, it shouldn't be hard for you to break even though since all you'd need to do for that is cover your costs.

Real numbers- purchase 907k,rehab , closing costs, soft costs, 840k, all in 1.747 mil, basis for each unit should be roughly 291kappraisal of each unit minimum 400k , so 2.4 mil if for all 6.I might refi only 4 out of 6, that will cover initial loan amount.

I think Peter covered the best course of action.

Rufo, so you are violating the HOA rules so I don't think they would cover anything if it is the fault of your guests.This will eventually catch up with you and could result in some big fines so maybe think of selling this or converting to a LTR instead.

I use airbnb and rent out rooms to cover most of my mortgage.

Simply covering the mask as sales pushers. 

Partner Driven financed the Main St deal by covering 100% of the $20,000 purchase price and $45,000 renovation budget, ensuring Amanda Frecks could focus entirely on project execution without the stress of upfront expenses.