As Jan said, the most perfect spot in Prague was this apartment. It was well located, right behind Tin Cathedral. Prague castle, Charles bridge, New town, all walking distance. And Dlouha street where the apartment is so cool, full of great bars and restaurants. The heating works well. I stayed in Winter and I was really satisfied with the warm temperature of the building. Jan was a great host; he kept in touch, was willing to take care of problems, and recomended perfect restaurants for certain occasions. I can definately rebook this apartment for my next journey.