Josef is a great host who lives in the same building. The apartment is light and spacious and extremely well equipped. The rooftop garden is excellent for sunbathing or outdoor eating, though it does involve going up a few steps, as does the upstairs bedroom, but if you are pensioners like us the downstairs one is just as good. It is a few minutes walk from the Botanical Garden and the Belvedere, and about 2 minutes walk from the frequent trams to the city centre. Vienna is very easy to get around using public transport, but you need a good map (which Josef provides). We would like to go there again.