Martina's place is really great. We loved it very much. She is a fantastic host, we didn't actually met, but everything was so good organised. She had left very good tips for everything we could do in city center (nearby the apartment).
The apartment is in 5 mins walking distance to old town square and everything in the Prague 1, it's sparkling clean, small, but has everything you need (except washing machine, but if you need to wash your clothes, next to the apartment is a very good laundry service, it's also was included in Martina's detailed guide). We had very good time in Prague and I'm already missing that tiny, cozy apartment near the monastery complex, in the heart of the city :)))