Walter is an amazing host. He is always responsive and is trying to help you with anything. The place is amazing as well. Very well located, close to all attractions as well as U3-U4. Therefore it makes it very easy to reach from airport via train and U-bahn . AC is lifesaving in this heat. Despite being very close to the busy streets, the apartment is very silent. Bed is comfortable. Will definitely stay again. Highly recommended!!