 In 4 nights we ve spent there Absolutely nothing 
 First of all the location Perfect easy access to the subway right in the center close to everywhere and located in a beautiful area surrounded by exellent restaurants shops and supermarkets The hotel looks really good Better then in photos beautifully designed and built with vintage style forniture in the lobby area The room was amazing the bed super comfortable well furnished cozy and warm Bathroom with fantastic shower perfect after a day out in the cold of the winter Room and bathroom always cleaned in the morning excellent housekeeping service The staff very professional always helping us and friendly Everyone working there from the gentleman at the reception at night to the housekeepers or the waiters at the breakfast buffet were the best expression of customer service People always friendly always smiling and always polite The breakfast buffet was great Rich with all you can desire All kind of good food hot and cold dishes always refilled when necessary It was amazing Book at the Erzherzog Rainer Hotel You won t regret it 