We had a great experience at Matina's place. Matina and her family took the time to give us great tips as soon as we arrived in Naxos and they also made sure to arrange a taxi for our trip back to the port on our last day. Communication could have been a tiny bit better (there was a misunderstanding with they keys during check-out), but that didn't bother us at all!
Regarding the house, we felt it was a bit too crammed for our party of 4, but it was to be expected. A few things should perhaps be looked at (e.g. flickering lights in the living room at night, shower head getting stuck in the curtain metal tracks), but all in all, we would still recommend this charming Airbnb :). The terrace is huge but we didn't quite enjoy it as much as we thought we would because of the many mosquitoes (should have brought mosquito repellent). Getting to Plaka and back was easy via the road just below the Airbnb.