My trip was amazing! Everything the hotel offers: perfect location, very clean, new interior and facilities, outstanding service in all details, very friendly staff, luxury car transportation from/to the airport, a fitness facility, underground garage, bunch of excellent bars and restaurants around 3 to 8 minutes away (I would mention Grozd, Shtastlivetza, Chef's Live, Arbat). It is located in 5 - 10 minutes walk from the main touristic, historic, architectural and administrative focal points of the city. A nice garden or park is across the street. Finally, the hotel has an own restaurant with excellent drinks! The hotel is not large, offers good privacy and calm atmosphere: just downtown but quite silent.
The Crystal Palace helped me organizing all my busyness trips and meetings, as well as to relax well between these. I regret I was only for five business days there - for sure spending the weekend there would be a good bonus for travelling business people.