What a great place! Alex was a really thoughtful host and helped us out enormously with airport transfers. He also ferried around my parents-in-law which was wonderful for them and took the stress out of the trip.
The apartment is spacious, light wonderfully clean. The beds were very comfortable.
We were literally a 10 minute walk from Old Square, which was full of interesting sights. It was, however, very VERY busy. If you prefer something quieter with little cafes and hidden bars, then we found that going over Charles Bridge was more to our taste. Nevertheless, a fantastic place to stay in!!