I would give six stars. Super helpful staff upon arrival. What a nice, quiet location, if you desire that. Great, cheap lobster directly from the person who caught it and friendly people that treat you like a local. This is completely off the beaten path and I hope it stays that way - I realize my review might achieve the opposite - oh, well.
Good Marina with helpful staff. Depending where you are docked it is quite a walk to the lone shower and bathroom. We were docked right next to a busy fishing boat (SKIPPER) which meant no late morning sleeping. These guys were very nice but started working at 6:30 - can't blame them of course. The lower the dock number, the closer to bathroom you are and away from working boats. Other than that it is an excellent location with access to all that Oak Bluffs has to offer. We stayed two nights and did not regret.
Very nice marina with very very clean showers and bathrooms. Very helpful staff and lots of restaurants within walking distance. Big ferries dock here so now and then a horn blows, but never during the night. I highly recommend.
While the area is very pretty and quiet, the little harbor is not a great place to overnight. Very crowded - 3 boats per mooring. You sneeze and a bunch of people say - Gesundheit. Also, depending on wind direction, the fish stench is nauseating. BUT - anchor just to the right of the harbor entrance and you will have an absolutely beautiful experience. Nice beach, beautiful sunset and peace and quiet.