Kathi & Peter's place is very conveniently located near to Westbahnhof (less than 5 minutes away) so it's very easy to find the location. We only met Peter upon our arrival and he was really kind to let us drop off the bags while he was cleaning the room (we had arrived close to 12 pm, which is 2.5 hours away from check-in timing). Despite that he could've just let us dropped the bags, he sat down with us and showed how and where to visit while also providing advice on how to do day trips to nearby cities (we had plans to visit Hallstatt). The place itself is very spacious, we were able to sleep comfortably with 8 people as Peter provided some mattress on the floor. I highly recommend this place for anyone looking to visit Vienna as this place is very near to the city centre (5-6 stops away from the Stephenplatz, which is one of the main shopping areas of Vienna. Overall, we had an excellent stay. Thank you Kathi and Peter!