We had a great stay in this apartment. It was just as described, clean and with all the necessary facilities. It was walking distance to the main square in the old town and in fact walking distance to all the major sites in Prague. We didn't use public transport at all, apart from travel to and from the airport (which was also very accessible), and we found the apartment to be a great location. Several nice bars and restaurants on the street of the apartment, including Hoffa bar opposite which had great cocktails and a burger restaurant down the street which was delicious.
All in all a very pleasant stay at Jirkas apartment - easy check in and out and great communication before and during our stay. I would definitely recommend staying here - a great base for exploring the beautiful city of Prague!