Alex and Inna's place had everything advertised - we appreciated its location and proximity to all we needed (train station, a few minutes to the edge of old town and shopping, and nearby food/market). Since we were traveling light, the washing machine was a big plus, and we did enjoy the coffee (provided).
Communications were great before we arrived with details about how to pay, location, how to meet and check in as well as providing some details to questions I had during the stay. They know the town and helped us with pointers.
Also, they were very accommodating to our needs for when we could check in and being able to leave early. Overall we had a good stay, and would stay again if we return to Prague.