Menna Development is building a 120-room, extended-stay, all-suite hotel in downtown St. Petersburg. The Clearwater developer will be breaking ground soon on the six-story property at the northwest corner of Ninth Street and Fifth Avenue S, with completion expected in fall 2009. Terry Welker, director of operations with Menna Development, said the hotel would carry the name of a major chain but declined to say which one. Menna currently operates three hotels in the Tampa Bay area, including two extended-stay Residence Inns. It also has a Marriott hotel being renovated and two other projects under development.