The appartment is located pretty near to Charles Bridge so you have got everything in very walkable distances... It is very clean and stylish... Alex was a nice host although we only communicated via messages... All in all we can only recommend this location.
Some things to say though... Not all the lights in the appartement are working, but it was no issue for us. Parking is in this district very difficult, so if you get there by car you should drive to some parkhouse or rent a parkingspace somewhere in the city.