So first of all the location of the apartment is really good and allowed us to get to the sights early in the day before too many other tourists arrived. Secondly communication with Dan was super easy, nice and friendly! He helped us out with check-in and baggage storage very complaisantly!
What was not perfectly clear to me booking the apartment was that it is at ground floor level, which leaves it a little dark and stuffy. We could not really eat in together, because of the apartment's rather tiny size, which visible in the fotos. But that's fine, as there are nice places to go out to eat to nearby. The apartment is mostly a place for only sleeping. One more thing which you should know before booking is that you hear basically any noise from neighboring flat quite loudly.
Anyways: the apartment is cheap and perfectly located, so price-performance is perfect in my opinion!