The Madrid-based Room Mate hotel group is well known for establishments that bring contemporary and affordable boutique-hotel glamour to the great old cities of Europe — and there’s none greater than Rome. Room Mate Filippo is ten minutes’ walk from the Trevi Fountain, which means it’s close to all the sights of the historic city center; still, it finds space for a garden courtyard as well as rooms that are generous, for Rome, if not quite palatial.