We're home-based out of Dinner Key and for a City-run marina it's pretty good. They have pump-out stations, electricity, and water
at every slip. No bugs! Pretty quiet, near a lot of restaurants and supermarkets in Coconut Grove (within easy walking distance). They also have laundry
facilities and showers. A fuel dock
, while not at the marina itself, is pretty close by. People are very friendly and their are lots of slips available.
Also, it's pretty easy to get to downtown Miami and the metro-rail is about a mile from the marina itself. Unfortunately, I don't know about busses, except that they don't run through the Marina itself. However, we're quite happy with what they provide and what they charge. Recommend you give them a call.
Best of Luck!