We're museum-goers, and this apartment was the perfect base for seeing all the wonderful art that Vienna has to offer. It's a ten-minute walk to the nearest U-Bahn station and from there the Museum Quarter is just another 10 minutes away.
We arrived during a cold snap with temperatures in the teens, but the apartment was snug and warm. It's not fancy, but it is well laid out and very comfortable, with all the necessary amenities and then some. It was easy to establish a routine.
The immediate neighborhood is quiet and residential, and there is a decent market about three short blocks away. And as other reviewers have mentioned, Peter is a great host, greeting you at the apartment and providing a quick but thorough orientation.
We felt the apartment was a good value. If we return to Vienna, we would definitely go back.