We stayed in the apartment with our two children (aged 4 and 6) and my elderly father. The apartment was spacious and very well-equipped. We were able to cook meals easily and everything worked well.
The apartment is around the corner from Wenceslas Square and is within walking distance to the Old Town and Charles Bridge. There is a Tesco Express within 7 min walk where you can stock up on groceries. It is also very close to the main train station.
The apartment is situated on the corner of a busy road so there is some traffic noise and on Friday and Saturday night it was a bit louder with the party goers in the street outside.
Despite this, the apartment is lovely and we would stay here again. The sauna and billiard table were added bonuses and it was great to sit in the sauna after a long cold day walking and sight seeing.