Overall the apartment is good, as it appears in the photos. Location is perfect, very central and easy to walk everywhere. Apartment was clean, nice terraces, etc; but there were a few frustrating things that I think people should be aware of:
1.) One room they list as a double room with 2 beds. It's more like a single bed with a pull-out mattresses. I think this should be a bit more clear.
2.) They only give one set of keys for an apartment that fits 8 people. There is a lockbox so you can work around it, but to get into the main door from the street, you press the button for the apartment and the door automatically opens. This system works fine, except the entire building seems to have learned the trick, so people are constantly ringing the apartment throughout the day to get into the building. Not a very good system and very annoying if you are chilling in the apartment or trying to nap. Why not just give a few more sets of keys? Seems very lazy on the part of the host.
3.) Communication is terrible. They responded to a few of my questions before check-in, which was helpful. But after that they totally stopped responding. It's a company that seems to run many apartments, so don't expect a very personal experience.
Overall apartment was good and in a great area, but keep the above things in mind before booking.