the apartment is very big, it has comfortable beds, great balcony, great kitchen, awesome location, a spacious living room, multiple bathrooms and showers and basically high standards.
It's great that there's a code for the door which makes it much easier for large groups.
to improve:
1. they emailed us several times for 2 nights that we were very loud but we didn't see those emails on time so they simply fine us with hundreads of euros.
Furthermore, once I answered and also asked for some towels and fans - it seems that we simply got ignored. twice.
So, although their apartment is really great, their customer service can damage your experience.
2. there are 2 rooms without air conditioning.