The flat is big enough to sleep 12 people. There are 4 bedrooms, one (bed)room with a sofabed, one sofabed in the living room.
The flat has two entrance doors. The (bed)room connects the two parts of the flat. Hence If you want absolute privacy for all guests you need to rent with 8 people.
The rooms were spacious. The apartment was clean. The walls and the furniture is all a bit used (ie shower curtain holder detached, wobbly sink faucets, old windows etc) but overall ok. Beds are fine incl the sofa beds.
Location is central. Nice neighborhood. Was not noisy at night.
Walter was very nice. Let us stay after check out. Organized shuttles from and to airport.