It's a great place to spend some days with family. Placed in the heart of old town and so, very close to the port, restaurants, markets, etc.
We've spend an all week there and we loved it because it was low season. In high season better to rent some motorbikes instead of car - problably it's complicated to park, but was not for us in this time of the year.
May or early June (or even end of September and October) must be the optimal dates to go to Naxos.
The house was perfect for us and with enough facilities, very clean. The host wasn't there but his brother Alex did the hospitality perfectly. Nothing to point out.