Our family had a really great stay at the apartment. It's centrally located in Karlsplatz which you could easily access anywhere in the city by metro/tram or even by walk. We came by car but we just parked our car in the garage nearby and go everywhere by public transport. It's a very safe and quiet district. I really appreciate all the city maps and guidebooks available in the apartment. Alexander and Bettina are very welcoming and we felt like home during our 2-night stay in Vienna. We highly recommend this apartment!