This appartement is just great! You're about 15-20 minutes from the old town center on public transports, just be aware that if you don't buy à ticket for the tram/metro/bus ride before getting to the appartment, you'll have to walk about 10 min to the metro station, the tram stations dont have ticket-selling machines. But that's just à minor detail. Ksenija told us everything we needed to Know before our arrival there, we did not meet her, but her mom showed us the appartment and answered to all questions we had. So, great People, great appartment, if you want to enjoy Prague, don't hesitate and just go here! :)