Jan and Sarah's place is the place to be when visiting Prague. I enjoyed my stay as it was conveniently located near many restaurants, landmarks, etc. I recommend staying at their place when exploring all around Prague. Their place had great amenities and was not too near noisy environments. As of this writing, please note that there was some loud construction outside but it didn't bother me as I was usually out exploring by the start.
Jan and Sarah also provided a lot of useful information highlighting great places to eat and visit. Jan even helped give me information about the local train system.