The apartment is beautiful, looks just like the pictures show it. Ludek and Petra were very helpful too, waited for us upon our arrival, explained everything and asked if we have any questions. There was coffee, tea and mineral water left for us for the morning. Which was very nice. The building has very nice and well prized restaurant downstairs with Pilsner beer from the tank. The apartment is located on the 3rd floor in a very desirable area "smetanovo nabrezi" right by the Charles bridge. It's great if you want to be located right in the center of the touristy hot spots. Just mind it could be little noisy there. Right outside of the apartment on "smetanovo nabrezi" is the most famous view of the Charles bridge and the Prague castle. That's where you can take your million dollar picture. Also famous cafe Slavia is only 5 mins walk from the apartment (go left), across from the national theatre, I highly recommend you to go eat breakfast there. It was one of Vaclav Havels favorite spots to go too. Also place called "naplavka" is near the apartment in the national theatre area. It is a river port full of fun restaurants and cafes filled with locals sipping wine and beer, listening live music.
I can also recommend you to go get lost in the small streets right behind the apartment in "betlemske namesti" area. You can find many great bars and restaurants there. Some typical local pubs and fun stores.
We definitely enjoyed our stay at Ludek's apartment. And can recommend it to you as well.. Thank you!