Everything was perfect. The apartment is perfectly suitable for 4-6 people. It was clean and equipped with all things needed for comfortable stay. We were able to leave our luggages in the office before check-in time as well as after check out. They recommend us a great and not so expensive restaurant with Czech specialities where we ate every day! Also what is great, the apartment is in walking distance to everywhere and it is not noisy despite the fact that it is located in the center, close to Charles bridge.
Summing up, great stay and great host. Thoroughly recommend it.