You can find a lot of information about flight to and from Athens on Athens International Airport's website: www.aia.gr

Easyjet flies to Athens from London twice a day. Website: www.easyjet.com

Olympic Airways flies from Athens to Naxos . You can buy e-tickets directly at www.olympicairlines.com . The flight takes about 30 minutes.
Charters to Santorini or Mykonos may be a good alternative.

Naxos Tours travel agency can also help you with travel times and tickets:
Tel: 0030 2285 023042
Fax: 0030 2285 023951
Web: www.naxostours.net

If you wish to travel by boat from Athens/Pireus there are many departures to choose from.
Have a look at Blue Star Ferries www.bluestarferries.com or the speedier Hellenic Seaways www.hellenicseaways.gr

Apollo is a travel agency which has flights to Santorini every Saturday, and from there you can go to Naxos by a boat in about 2,5 hours.
KLM has many flights from several locations to Athens via Amsterdam. Website: www.klm.com .

If the house is already rented out in the period you would like to rent it, you can find many other nice apartments and houses on DE Greece's website: www.degreece.com .