Photo: Wikimedia CommonsA reliably smart budget choice, this Motel One sits right by the Roemer in the heart of the old town, so the cathedral, the river and the main sights are all on your doorstep. Rooms are compact but stylish, and the signature blue lounge-bar is a pleasant spot for a nightcap. Breakfast is an optional extra. Ask for an upper-floor room for a little more light and quiet, and walk everywhere from here.