I've stayed here on a number of occasions for business and it is a unique and rewarding place to stay, if a little out of the way.
The price for rooms varies enormously from week to week. One week a standard room will cost 189 euros per night, the next over 300 for no discernible reason so choose your dates carefully if you can.
The desk staff are attentive and approachable but lack imagination on occasion. The chain lacks a loyalty scheme and seems to offer little for regular guests.
The gym is excellent and the views extraordinary... though you'll have to pay extra for it.
Breakfast is sufficient but nothing extra since they put the price up. The fruit goes fast.