Comfort Double Room
Not close to lots of stuff but...
On the southern edge of Vienna but metro station three blocks away. Bought multi-day pass, was useful.
Metro was very good for getting to all the various points of interest if one could just figure out the varying connections required - friendly citizens were helpful.
They forgot to clean the room the second day, they never clean it. We have been for two days. The rest was ok, but very dissapointed with that situation. The bed for our son was very unconfortable.