Although we stayed for just a day we had a great time at Frantisek's place. The place is, as it says, "Right Smack in Center" with good security and a restaurant right next to the entrance of the building. Frantisek was very quick and precise when it came to responding to queries and I did have a lot of them. He arranged for someone to hand over the keys to us the moment we arrived. The instructions on the site are clear and precise.
He also arranged a drop for us from his place. Although we delayed the cab, Frantisek was very accommodative and asked the cab to wait as long as we wanted.
Thank you, Frantisek. Would definitely stay here on my next trip to Prague.