I love this end of Lagoon Pond, the pond is warmer water than the open ocean/beaches, it's almost always calm, it's pretty quiet, and it's a beautiful setting.
The rental not only has two kayaks (both are two seaters), it also came with a complimentary waterskiing or similar "adventure" or rental form MV Watersports, which was great (and pretty nearby via water around the corner to the Oak Bluffs marina out the end of the Lagoon Pond area).
Having a pier/dock is a big benefit here if you want to pull a boat up, or just sit on the end, fish off it, etc. (even in the mid summer when the lagoon is warm there are some smaller schoolie stripers to catch in the mornings). Most Lagoon Pond houses do not have a dock, this is a nice perk. There is also a deeper water mooring I think if needed for boaters with deeper draft.
While someone could sleep on the fold downs downstairs, they are in the one (big) open room there, not really a bedroom, so I'd... more