I flew into Prague for my best friend's wedding, and was looking for a place nearby her flat. David's apartment was super cheap, and only two doors down. When discussing exactly when I would check in, David offered to pick me up from the airport for E20, which is approximately what it would cost to take a taxi--a convenience I greatly appreciated.
Check in at the house was a bit rushed, though fairly thorough on the layout, amenities, etc. He stayed to ensure that my phone connected to the wifi.
The bed in the bedroom was comfortable, and could sleep 2 quite comfortably. The couch in the livingroom folds down to make a bed, albeit a fairly small one--regardless, my friend said it was comfortable enough and she slept fine.
While the apartment was mostly clean, there was definitely a lot of dust and dirt built up on the lower level of the coffee table (where lots of tourist information pamphlets were conveniently provided, although I wasn't terribly keen on touching them), as well as in the corners and along the baseboards. Not a huge deal, but something to be aware of for those with dust allergies or who are persnickety about cleanliness. I was perfectly comfortable.
Location-wise the apartment is pretty great. It's right by several of the stops for the 17 tram, which runs to the Old Town Square in approximately 10 minutes (as the listing indicates). There is also a yellow box by the entrance to the park across the street where tram tickets can be purchased (tickets must be purchased ahead of time and stamped upon entrance onto the tram; if you get caught without doing so, you'll get a hefty fine). Tickets can also be purchased from many of the convenience stores you see around. While I didn't have the opportunity to do so on this trip, the walk into town from the apartment would be lovely and probably only take 30-40 minutes. It is also conveniently located to the zoo and several parks, all of which are supposed to be quite nice.