We had a lovely stay in Betty's apartment. It was clean and had everything we needed. The best thing for us was that it was so close to the nr. 1 Strassenbahn. This takes you in a few minutes to Karlsplatz, but even better, it is a great ride to the end of the line (Prater). Another tip: Go to the Karlskirche just before sunset and enjoy the relaxed atmosphere around the pond in front of the church and the stunning reflection of this beautiful church in the water. Great!