Furnished Apartments For Rent In Rittenhouse Square Philadelphia . 226 w rittenhouse square unit 207. Rittenhouse philadelphia furnished apartments for rent. AKA Rittenhouse Square 135 South 18th Street Philadelphia from www.weichertcorporatehousing.com Each of us has our own must have when it comes to renting a room in rittenhouse square, philadelphia, pa. This neighborhood is good for renters, with 71% of locals renting their homes. 226 w rittenhouse sq #1802, philadelphia, pa 19103.