.- Anything outside the immediate settled areas will be off-grid, so you'll need to maintain solar panels, water purification systems, septic, etc. and forget about internetIt's a very popular destination and will probably grow in popularity as Panama works on its tourism outreach, but there are too many obstacles for me to see it as a viable investment.

Should I replace the cabinets and install slabs?

There are things I know I will never look at doing myself: plumbing, electrical, roofing, installing hardwood flooring, bathroom remodel, and I'm sure many more! 

Horton with solar panels.

I have verified with USPS that each triplex address is in their database and that there are no issues with the location and height that I would install it at.

Agree with everyone else - Install a nice pre-fab vanity, tasteful mirror, add a nice light fixture, and slap a coat of paint on the wall.

Wondering if anyone has a recommendation for a trusted carpenter/handyman/contractor who can install wood butcher block countertops?

I’ve installed DIY split systems myself.

We are renovating a home in the Catskills and stuck on what railing to install on our outdoor deck—cable or metal.  

Given the extensive work needed I will be using sweat equity to complete the job minus the installation of windows and doors.