I was in Frankfurt for a convention. Due to the size and demand of the convention in addition other events, we were relegated to the 'burbs for accommodations. Typically I wouldn't stay outside of city center but in this case, and being Germany, the trains are efficient and convenient so getting into town was no problem. The hotel is located just outside the main city center of Rüsselsheim in an area that would appear to be semi-industrial, however there is an excellent bakery, Italian and Spanish restaurants within a few minutes walk. The staff are very friendly and helpful and the hotel is immaculate. I will be coming back here in 2 years for the next convention.