Clean, comfortable, and in an excellent location. The apartment is walking distance to everything you want to see in Prague, and near plenty of excellent restaurants and bars.
Martin was a great host. He communicated clearly and was flexible when my flight was severely delayed. He also went above and beyond—my power adapter failed, and I asked Martin for a store that might sell one. He found the exact item I needed, and sent me the nearby store and product information. It was a small gesture that made the process so simple.
Previous comments on noise are accurate if you leave the windows open, but I wasn’t at all bothered. If you’re sensitive to sound, close the windows or bring earplugs. All told, a great experience!