I live in an eleven room house 100 yards from Long Island Sound. The bedroom for rent has a double bed. The shared bathroom is large with two sinks. There is a half bath and a walk in shower on the first floor.
Depending on the season, you can swim in the Sound and/or walk on the beach which is rarely crowded. You will be less than twenty minutes from New Haven with it's great theaters and wonderful art museums. You will also be an hour and forty minute train ride from New York City and the train is within walking distance from the house.