Silverstein Properties and Four Seasons Hotels and Resorts have joined to develop and operate a hotel and private residences in a new development at 99 Church Street in Lower Manhattan. A 175-room Four Seasons Hotel will occupy the first 22 floors of the eight-story tower. The remainder will have 143 private residences managed by Four Seasons. The tower, located between Barclay Street and Park Place, will be one block from the World Trade Center redevelopment site. Guests of the hotel can expect a spa with health club and pool, restaurant and lounge. Those who take up residents in the building will have access to an indoor pool, fitness center, children's room and lounge. Foundation work for the new tower should begin in June, with completion in early 2011. (MA)