My friends and I stayed at Maria's place recently and loved it. The apartment is large, modern, clean, and in a perfect location to experience Naxos. The location is walking distance from tons of restaurants, shops, St George Beach, the port, the castle, etc, but not in a noisy area. The bus stop, where you can catch a bus every few minutes to other beach towns, is an easy walk from the apartment. Inside the apartment itself was everything we needed -- info about activities, towels, a lovely porch with a clothes line, washing machine (and detergent), A/C, a well-equipped kitchen and dining table, etc.
Niko, Maria's son, was quick to respond to questions and help us when we needed. The family is very kind and hospitable hosts.
We can't wait to visit again!