 There was no heating operating in the whole hotel With thin walls and temperature of 8 c degrees at night September in Vienna the room was freezing This is unacceptable in a 4 star hotel Further the breakfast hall on the 2nd floor is crowded and seating is limited and the buffet definitely is not worth the high price 
 The staff was very nice The location on Mariahilferstrasse near a U Bahn station is convenient 