Overall, the apartment is great for visiting Prague. The address is in walking distance to all major sights but it's still reasonably quiet to get a good night of sleep. Zeb was also very helpful and the price was very reasonable for such a relatively large apartment. The 20€ per night for the parking spot may sound steep at first, but after a little bit of research still turned out to be the cheapest option for long-term parking basically anywhere in Prague.
However, one big draw back were the large number of flea bites my girlfriend and I got over the course of our four nights at this apartment. If it weren't for them, I would give full points.