We anchored in Vinoy basin for about a month a few years ago. Right on the bus line, easy access to anything. There were 2-3 liveaboards there then, who had to move to the next basin south every few months for a few days when there were water events
The signs said 3 day limit or something like that, but they seemed to enforce that only when derelicts showed up.
It was a great place then -- hope it is still available!
An alternate is about a mile south, just east of the Dali Museum and SW of the airport
. We anchored there for a few weeks as well. Not quite as convenient, but not bad.
Both were well protected and quiet. The Vinoy basin had several easy dinghy
landings and a place for water
(city park bathhouse to the SE of the anchorage). We weren't in the other anchorage long enough to need to refill water tanks
, but could probably have worked out something with the nearby marina, which allowed us to use their dinghy dock
for trips ashore.
Between the two were the municipal marina and the yacht club. Either might offer slips for liveaboards, as might the marina to the south of the anchorage near the Dali museum, but we didn't check -- our anchor
worked pretty well, and we didn't need a piling to tie to.