Had a delicious mariscada (fish stew) at the Boulevard Ocean View Restaurant in Gloucester. The restaurant is mentioned by roadfood.com which will give you an idea of the decor. The sauce was piquant and the stew contained a whole lobster, many mussels, shrimp, clams and scallops. Cost was $28.95 which served two(additional $2.00 charge to split the dish). A nice light Portuguese white wine was a perfect accompaniment. It's across from the beach so I would imagine it would be crowded in the warmer weather.