Marty's review should be split in 2.
First the place itself, it was really comfortable to sleep at Marty's place and had the value-added that both ACs worked as expected in truly warm days in Prague (over 35 degrees). Regarding the Location, you need to take the tram which will take you directly to city center so expect 15 minute to reach there. For both airport and central station, should will need to change to 2 and more trams / bus, so take this into account when planning your arrival.
Secondly the check in process, as Marty was not in town, we appointed someone else who also ended up not being available for the check in process. Some hours prior to the arrival was appointed another 3rd guy, who despite being very polite with high sense of service, makes me and my family wait under the sun for almost 45 minutes which was not a very pleasant in a 35 degrees weather because another check in was happened at the same time and we ended up waiting outside.
Either way a will still recommend marty's place in Prague.