As family of 4 - with kids aged 3 and 1 this was a great place to be. We stayed there for 14 days. It's not too far from everithing you need. Apartament has all the basic stuff you need and it's big enough. Nothing to complain about. Location is especially great if you windsurf and if you like big sandy beaches. Marmari is great location. It's not too crowded and is on the center of the island, good for exploring the whole island. We had a car for three days and it was enough for us. We also loved the bikes you can rent nearby. it's cheep and makes your life easyer.
For eating I would higly reccomend resturant Ambrosia in the center of Marmari. They have great menu.