I do have to say that the location is great with a wonderful view over the lagoon and a nice breeze. Fitted out nicely also with a clean rest room. We really did enjoy our times there, as it is very friendly with plenty of locals - until we got the check. The food prices seemed decent, and I've been told the daily special, which is about $12.00, is very good.
Here's the location:
http://www.gatewaymarinasxm.com/location/locaton-map.html