Check in and check out times are very strict. The staff working at the front desk (next door to the actual accommodation) were very nice - you can actually leave your luggage there if you arrive early.
The apartment itself was spacious and the location is great, super close to the train station.
I think the demographic for this place is pretty young - they call it a serviced apartment but it was more like a fancy hostel. There were a lot of big groups staying there and they got quite loud — we could hear everything through the walls.
Overall not bad for the price but not super family friendly. Better suited for a group of friends.