We arrived kind of late to the apartment and we were worried about not being able to enter but the roommate of the host was so nice he gave us the key without any problem. The apartment is really cool, it makes you feel like your own apartment (if you are a student). We really recommend it. It's in front of the metro stop and you can also walk to different areas. There are a supermarket right next to it and also some bars and restaurants so it's really convenient. We really enjoy our time there and even though we didn't meet Jonas because he was away he was so nice and always reachable by messages. His roommate was super nice he showed us around and explained us some things about Vienna. We will repeat!