Andrea is not the real host, she acts as English speaking intermediary to the man that actually takes care of check-in for a large number of apartments.
Andrea is very slow at answering messages and often does not pick up the phone. She did not provide information on how to reach the apartment (no indication of doorbell or entry code). As a result, although I specified well in advance that I was going to check in at 22:00 hrs, I had to wait for 30 minutes on the street with my kids and the suitcases while she did not take my calls nor my messages.
The apartment is nice in itself but it was not very clean. There was only one towel for each guest, and they were stained and smelly. No shower mat, dirty laundry left in the bathroom, filthy slippers in the wardrobe, mouldy food in the cupboard. Bed linen were clean but the curtains were filthy. The apartment is beautifully located on a side street of the most elegant avenue in Prague, everything is within very easy reach on foot. There are nice restaurants within a few steps, in particular an Italian restaurant on the corner (Pepe Nero) and a fantastic bakery just a couple hundred metres away. I would return for the location, not for the host nor for the cleanliness. It would not take much to make it a great place.