Georg kindly showed us around the apartment and answered any questions we had. His guidebook is probably the best I've seen! The apartment is lovely. The shower is nicely sized (compared with other European showers) with a great rain head. He had nice big towels and even washcloths, which is a rarity in Europe. The apartment was clean and nicely appointed. The location is excellent. We walked all over the place! Would happily stay here again.

Recommendations:
Phil (right nearby) for coffee/bookstore/vintage furniture and a place to relax after sightseeing
Brass Monkey for coffee and cupcakes (even the vegan ones are good!)
Trattoria La No for quaint Italian (of the Tuscan region)
Dorotheum - fascinating auction house where you can peruse things up for auction (like a Sotheby's)
Donauinsel - for a break from the city, ride bikes or just walk around the paths of this island in the middle of the Danube
If you're staying for more than 3 days, grab a week long metro pass that lets you ride the U-Bahn, S-bahn and trams/buses as much as you want for 7 days (pass is good Monday to Monday).