Katerina has a great location. It is very close to Wenceslas Square. It is also close to the main Prague train station. If you are arriving by train you have a short walk to the apartment. If you are arriving by plane, take the AE bus from the airport to the main Prague train station. Prague is a very walkable city. Katerina's apartment is within walking distance of all the sights in Prague. If you want to take a metro somewhere there is a metro stop at Wenceslas Square. From Wenceslas Square you can walk through mostly pedestrian only routes to get to the Astronomical clock then to the Charles Bridge.
The apartment itself matches the pictures. There is a small lift to get to the fourth floor, if you need it. Washer/dryer combo is great. There is a small convenance store just a few doors down and a larger Billa store back in the train station. Katerina's apartment is a great choice for your visit to Prague. Thank you Katerina for allowing us to stay at your place.