Babis' place was lovely - nicely furnished, clean, close to the sea, beautiful garden. he came to pick us up from the ferry and his dad took us back again - he also rented some bikes for us from Naxos town as we had no transport to get them (you do need transport for Naxos - and if you want to rent a car, be sure to take a driving licence). He also argued with the bus driver on our behalf when the scheduled bus threatened not to arrive.
The area around the apartment is quiet - there are a couple of tavernas within walking distance and a (good) shop which is a good 20-25 min walk away.
If you walk up mount zeus, be sure to take the easier path ( see the lonely planet or ask a local) and not the one which goes past the grotto/cave as you are basically scrambling up a vertical cliff face and it is impossible to reach the top.
Naxos is stunning - a mix of lovely beaches, lots of agriculture and nice local food, Greek fokelore, and ruins. We had a great trip.