Have stayed in the Grosvenor's basic room and tower room. The basic rooms, in the wings, are your motel rooms from the 70s, nothing fancy. The tower rooms are nicer with some good views. Grosvenor is very convenient to Downtown Disney, just across the street. My two stays there were pleasant, I had nothing to complain about. I think I paid around $70 for the wing room in off season and around $100 in the Christmas season for the tower room. Discounts can be found if you look around, I probably would not pay or stay there at the rates I see sometimes there for the high season, I think once I saw around $150.
Phrank