Very clean, efficient check-in and check-out, good Wi-Fi connection in room and throughout the hotel, very good breakfast. Nice location near a train station featuring Roman ruins (not the main station for Mainz, but that was fine) and many interesting sites and dining options within easy walking distance, including a free museum across the street. The room is small with very basic amenities, but this is a budget hotel, and it was totally fine for one person for 3 nights. My only complaint was the twin bed I had in my room was VERY firm, to the point of being uncomfortable. It was also really small -- I'm a smaller person so that was fine, but it might be too small for a tall or large person.