I stayed in Frankfurt for 2 nights in a 1-bedroom apartment. There was so much room and the beds were really comfortable. There is a kitchenette, dining table, lounge area, desk with wifi connectivity (at a cost but not expensive) and a twin/double bedroom with wardrobe. The bathroom was spacious also with bath/shower. The absolute bonus with the apartments which is so handy when you are travelling is the washing machine & dryer right in your bathroom. Breakfast was extra in the restaurant down stairs which was lovely and plentiful. For the Aussie's out there, vegemite is on offer also to accompany the vast jam selections! This restaurant is also open for dinner and there is a bar area. The food was very nice and not too expensive.
To top it off was the spectacular views over the river from the room which were so pretty. The river is about a minutes walk from the hotel and the walk to Old Town & essentially the main part of the city (shopping, etc) is about 10mins walk. It is a lovely walk along the river which makes it go by very easily. Everyone rides bikes in Germany and the hotel also has bike hire available.
I highly recommend this property.More