The apartment is an absolute homerun. We stayed as a family of 4 with 2 children. The apartment had great separation of bedrooms which meant we had our own master suite and the kids on the other side splitting a queen bed with their own full bath.
The apartment itself was very tastefully decorated which added to the positive vibes.
Location perfect - close to all shops/restaurants etc and a beach that was walkable. Parking. 7-8 min walk but not an issue at all.
There is street noise - but that's unavoidable with such a centrally located apartment. Also some noise from the apartment above - but again that's unavoidable.
Kosta as a host was responsive and accommodating - couldn't ask for anything more. He gave us a welcome basket of cheese and eggs, cereals and crackers which we ate throughout our stay.
We spent a wonderful 5 days in Naxos and would recommend to anyone.