The development group for the 200-room Marriott Hotel that is planned for downtown Milwaukee recently announced that it has tweaked the design for the hotel, which will preserve a larger portion of the historic buildings along Wisconsin Avenue and will reduce the height of the building from 10 stories to nine. The $50 million hotel will have 200 guest rooms, meeting and banquet space, a restaurant, bar and underground parking for 50 vehicles. Groundbreaking for the Marriott hotel is planned for later this year, said development group Jackson Street Management.