I can highly recommend Bomanite for concrete patio work. This outfit is based in Savaneta and they install the stamped and colored concrete you see at many places around the island.
Well, the shack needed major exterior improvement and I hired them to create a simple patio area along the side and front of the shack. Ended up with 100+ square meters (1,000+) square feet. Turned out quite nice.
Working with the crew was fun. I learned some more Spanish, got some exercise, and learned some things about concrete finishing.
So, if you have shack in progress and require this type of work. I suggest you try this outfit.