We went there for a citytrip and visiting the "Christkindlmarkt". The location is good, next the Rathausplatz where the biggest christmasmarked took place and the famous Burgtheater. A metrostation is in the near but we never used it since we could reach all the attraction by walking.
The room was modern interiour, good light design, big windows, cool bathroom with a glasswall to look from the bed inside bathroom and even the shower :-) (for non-couples there is a curtain of course)
Service was very good, friendly and helpful. After a long day outside in the cold we enjoyed to use the sauna after. It's small but there were no other people except us, so it was fine.
But don't expect a SPA or something like this.
The restaurant was also good, ate there once in the evening. Breakfast is good as well. Not huge buffett but acceptable, everything you need for a continental breakfast.More