Stayed three nights on business and found the stay enjoyable but not special.
The hotel is centrally located in downtown Frankfurt -- convenient to business, restaurants, shops, the main train station and only about 15-20 minutes from the airport. The outside is most impressive; inside . . . well, read on.
The lobby is spacious with lots of marble. However, it doesn't take more than a handful of people to make it seem crowded and noisy. The hotel bar is attractive and non-smoking. Service was prompt and prices were what you'd expect.
Originally, I was offered a first floor room on the main street; when I asked for something more quiet, I got it, although with a view of the air conditioning system. The standard room was . . . standard. The ceilings are very high, giving a feeling of spaciousness and the room was relatively large. The furnishings included a double bed that wasn't particularly comfortable and a chair and ottoman that were. Decor was unmemorable and somewhat dated. TV was large but not flat screen. There is an in-room safe that is easy to use.
The bath is small but modern, with lots of marble. The towels are unacceptable -- thinner than you would expect at a Motel 8 and you only get one bath towel and one hand towel -- not sure what you'd do with two people in the room. Amenities were replenished daily.
Internet is expensive at 12 Euros/hour with no option for a daily charge. Thirsty from your trip and want a bottle of water? -- it will set you back 7 Euros. I did not dine in the restaurant or order room service. Elevators were relatively prompt given the size of the hotel. You can easily program your wakeup calls on the phone. Hallways are very wide but, for some reason, hallway noise gets into the room and thus, when the luggage carts roll by early in the morning, you hear them.
The concierege was especially helpful both in providing information and in making restaruant suggestions/reservations. There is another staff member dedicated to helping with train/bus connections and I found her assistance invaluable.
Overall, the Frankfurter Hof was acceptable in every regard but at no time did I feel that I was staying somplace special. On previous trips to Frankfurt, I've stayed at the Hessischer Hof and would definitely recommend that over the Frankfurter Hof if you are looking for a smaller property with more inclusions.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.