We didn't like the shower curtains (we never do)
The kitchen could contain more utensils, including a bottle opener, a better wine opener, and more wine glasses for example.
The bedroom was a bit small (meaning the bed was filling up one side of the room, wall to wall)
The manuals for the different appliances could be presented in a better way (found some here and there, but not all of them).
All in all, small things, but there is always room for some improvement :)
Clean, modern appartment
Lots of TV channels
We had a terrace, which was nice
Big bathroom, and good shower
Great service from the staff
Very good value for money
Very good kitchen, with dishwasher, built in microwave in the oven, which also had an induction top.
WiFi worked very well, stable and ok speed (2-4 mbps).