 Our air conditioning only worked when we took the key card out of the slot that enables the lights to turn on In other words if we wanted to keep cool we had to do without lighting during the night We reported this on our second day of our four night stay and were told they d send somebody to check it out but we never heard anything more and the problem continued 
 Nice people good breakfast very good location just steps away from the Underground stop and the Karlsplatz was just two stops away 