Stayed here for a long weekend and we loved its proximity to the Aquinnah Cliffs Overlook where we watched a beautiful sunset over the Atlantic. It was less than a 10 minute walk to the Overlook and a 15 minute walk to Moshup Beach. However, this location is a 40 minute drive each way to Edgartown or Oak Bluffs. You will need a car if you stay in this location.
With regards to the unit itself, it's a great size for 3 people. The room with a twin bed and trundle is quite small, probably tight for 2 adults but perfect for kids. The kitchen is well equipped. If you like watching TV, the one they have in the living room is very small and pretty old without streaming capability. The biggest negative for us is the fact that linens and towels are not provided. You will have to pack your own bed sheets, pillow case, and towels for the bathroom and kitchen. Considering the rental fee is on the high side, this really should have been included.