After we ended up having a problem with another accommodation in Naxos, we were very lucky to have found this place. Antonis and his family (who live in the area) were very helpful in getting us set up with the apartment and making sure that everything was OK.
The apartment itself was very comfortable and clean. It is spacious enough to feel like a real 1-bedroom apartment and not just a hotel suite. The bed and sheets were high-quality and very comfortable. The washing machine worked well and we took advantage of it to avoid accumulating a lot of laundry during our stay. The kitchen was stocked with more than enough pots, pans, cups, and silverware to meet our needs. There was plenty of good ovherhead lighting, the shades did a good job of keeping out the early morning sun, and the in-wall air conditioner units kept the apartment nice and cool. The front patio area was an unexpectedly nice addition as well, providing a good place to sit outdoors in the early mornings and evenings when the sun isn't so strong.
The location was excellent and is about as perfect as it gets for Naxos Chora. It's close to the south edge of the Old Town, about a 10 minute walk to Agios Giorgios beach and the surrounding areas. The apartment building is on a quiet side street, with pretty bougainvillea trees growing from a guesthouse a few buildings over. But it's also centrally-located, right around the corner from several good restaurants & shops, the waterfront, and the upper Kastro streets. We particularly enjoyed being just a few buildings away from Rebel Project (one of the best coffee/barista shops we've ever been to anywhere in the world) and Padelis Coffee Shop (excellent omelettes). There is also a public Naxos spring water tap across the street from Rebel.
Staying in this apartment was a great experience and we felt like we got a lot of value for our money, especially considering how lucky we were to find it on short notice.