Paul and Anna are just great! They invited me to have dinner with them in two nights and the foods Paul made were delicious. The apartment is located in the center of Vienna and you can easily get to the old town area by feet or public transportations. A subway station is just at downstairs. Many food markets and stores are just at downstairs too. It's a super nice experience with them and I would recommend Paul's place to all travelers in the area. 5-stars host and experience!