We loved Pia's apartment! It was comfortable, spacious, well-lit, and her flatmates were respectful and helpful. Pia was away but arranged for her (very sweet) flatmate to let us in, and help us coordinate our stay, pick out a restaurant to eat at and sights to see! Pia was also thoughtful and communicative in coordinating our visit to Vienna, and always replied quickly, and with lots of detail. The location of the place is very good, with easy access to great food, supermarkets, cafes, and public transport. Despite the walk to the major museums, monuments and the Stadtpark being a bit long, we recommend doing over taking the train (though that will get you there quite quickly) because it's very pleasant and there's lots to see on the way. We would definitely come back! An added bonus: she makes very pretty postcards!