First time I can't understand why this hotel got high rating.
Maybe reason is "noise form neighbor" and no air conditioner.
Reception is expert and fast, room is not large, but clean and comportable, location is fantastic.
But there is no soundproof, not the "weak", just "no soundproof".
I can hear many noise from neighbor from dusk till dawn, even falling water from showhead.
If you meet the neighbor with manner, this hotel is very good to stay. but you must remember this hotel is very close to wien-mitte station. Many traveller use this hotel and they need to hurry from dawn.
if you visit here in summer, you would be open the window because no air conditioner, maybe you feel pluse noise from outside.
So, I can recommand this hotel for just one night.
3 star for the reception and housekeeping, not the hotel.