Convenient between the main train station and the city center, clean and friendly. The windows keep the noise out for a good sleep. The breakfast buffet is wonderful, including fresh eggs. The area directly south of the hotel and towards the main train station is the very seedy red-light district of Frankfurt (with some excellent restaurants, too), but if you stick to Mainzer Landstrasse or north of that, it is fine. The plaza directly in front of the hotel is fine too.