We're just back from a 5 night stay in one of the apartments (B4) and couldn't fault it. We were a party of 7 (5 adults and 2 children), and there was lots of space for us all, and we never felt cramped. One of the rooms is a mezzanine style with sloping roof, but wasn't an issue, as the photos clearly showed this. The location was ideal, facing the slopes and within a short walk to the shops/restaurants.
There was even a sleigh left for us to use which was very welcomed.
The amenities were great, we used the sauna twice and there was every possible kitchen utensil you might need, with lots of cups/plates etc for our large group. There was also parking available.
The drying cupboard was great too especially for wet gloves/socks.
Overall, would definitely recommend this apartment, if we're ever lucky enough to return to Levi, I would definitely book here again.