Caroline & Jerome were perfect hosts. We got great directions on how to get to the apartment and tips on public transport and places to visit. The guidebook in the apartment was a big plus. The apartment itself was well situated with good connections to the centre. The apartment is very clean and well equipped. The toilet is in a tight space but we already knew this from reading other reviews. If you are a light sleeper, bring earplugs. It can get a little noisy as it faces a street and is close to the train station. The WiFi is a little patchy at times but Jerome and Caroline are more than happy to reset the router for you. This was not really an issue for us as we had mobile data. Overall, we recommend this apartment if you are in Vienna for the helpful hosts, cleanliness and location!