We had a great stay at Pinnacle Beach Cottage. It is a single house, but since the ground (or first, if you're American) floor is occupied by a garage it's more like a first (or second...) floor apartment. It is comfortable and clean and has everything you could want, including good parking, a very nice deck, and plenty of beach gear - chairs, toys, etc.
Lori was super: readily available and accommodating, and mom Janet was wonderful to our 5-year old daughter. The location is excellent - a short walk to the beach but in a quiet residential neighbourhood. I wanted to give my daughter the special Ocean City experience that I had as a child, and we were all delighted!