I am not willing to write a positive review, because I am afraid next time we want to go to Westerly, this place will not be available! We didn't just like it - we loved it! The house has enough space for a large group of people (we were two families), and allows dogs. The pool in the backyard is a good opportunity for folks, who don't want to walk 10 minutes, or take a ride for 3 minutes, and go to the beach. The beach near Ocean House is spacious, and the ocean water is actually warmer than at the Hamptons.
Back to the house - the tv set in the living room makes it a place to get together in the evening and watch the US Open. The kitchen is well equipped, including new oven and dishwasher, and has enough plates, glasses and silver, as well as everything else one may need when cooking. There are plenty of bathrooms and bedrooms to host, well, about 11 people. Water is running with good pressure, and hot water is running almost instantly. The basement has two yoga mats and some weights for the gym fans. The nearby tennis club (7 min drive) - Pond View Racquet Club is highly recommended; we went there every day, and the owner is a lovely lady, who has built great courts and hired excellent pros. If you are into just hitting with a friend, you can go to the nearby Rotary park public tennis courts. For groceries - the Stop&Shop (or was it Shop&Stop) is also 7-8 minutes away. There's practically no traffic in the neighborhood, and you can ride a bike.. Ah, about the bikes - there are several in the garage, and they are all great, including a kid one, and even a tandem! If you need to adjust the seats, there are instruments in the basement, too. The nearest town center and the marina next to it could be a starting point; plenty of restaurants with excellent food are also nearby.
Hope that gives you enough information to book this place next time you want to go to the beach.