Stayed there for almost a week in December, while it is not the cheapest option in Frankfurt, the view is well worth the money.

Stayed there for business in Dec 2011

Breakfast wasnt included in my room reservation so I cant comment it, it costs 24eur though

Rooms are very spacious and located from the 23rd floor and upper, which provides a pretty nice view over Mainhattan.
Not all room have a internet cable for a free connection, so make sure you request one when you make your reservation otherwise you will pay 5eur/h for a wifi connection. I had one with cable so the hotel gets its 5 points.
Those are renovated former serviced apartments, so there is a little kitchen available in case you need to cook something

Hotel is centrally located, walkable distance to major financial institutions, staff is helpful

We loved this hotel. From the moment you are greeted at the foyer and transported (or beamed up:) to the 22nd floor in space-age glass elevators, to the minute you open your room door to be greeted by the spectacular views you know that you're in for a special stay. The view, the view, the view! wow, wow, wow!. The rooms are very stylish with real attention to detail. The bed was really comfortable and the room was absolutely immaculate. Loved the walk in wardrobe and little kitchen/dining area (not that we needed it - but some guests may). The windows actually open right out (25th floor) which is great, if like us, you like fresh air as opposed to air conditioning. There is another window beyond it, so you obviously can't tumble out:). The bar on the 22nd floor has a great lounge feel, with live music and quirky bathrooms..... BUT it is very expensive. I suppose you are paying for the view, so it is worth it in that respect. Breakfast was absolutely delicious but at e25 each it should be!....I would definitely recommend this hotel and certainly stay again. The location is perfect too, it's a 5 minute walk to the old town and a 2 minute walk to the fantastic shopping centre.

Honestly, it is quite expensive for a just a view, however, very nice.