It's quirky I know but the house boats in Garrison Bight and spread around the area were really what attracted me as air bnb (which didn't exist at the time) places.  

Subterranean termites need to be killed where they live, in the ground.Remember that wet soil will also attract termites - so look for pipes leaking and plants/mulch that stay wet close to the building.In Florida, a wooden building that hasn't been treated for termites recently... has termites.

The house is in a great area and attracts good renters.

If the schools, streets, shopping and entertainment areas look like a C, attracting residents to pay the higher rates by upgrading the property to a A/B as you suggest (higher than the surrounding area) is typically not going to work out so well.  

My main question is what kind of market do you think you'll be attracting with a 4BR furnished rental?

It's extremely cheap for a duplex, and then combining that with just the look of it...my hunch is it's going to attract a very specific type of tenant, and one who could cost you a lot of money.

I tried using the @ symbol followed by the person's name and its not showing up as a link.

The property fell in my lap at a really attractive price and I thought I would be fool not to try and pursue it further by utilizing my network. 

We probably put too much into improving the properties but I prefer to have a safe house to rent and one that can attract a better tenant, and so far we're 2 for 2.  

I'm attracted to the scale-ability that they afford.