I have been to Rhodes many times in the past and I love it. Last time was this summer. I always try to spent as many days as possible and I think I could spend the rest of my life on this island...
The Old Town is my favorite place, along with the Waterland Park at Faliraki, it is so fun. If you are on the island, you definetely not miss Kalithea, the valley with the Butterflies, the Castle, Lindos, Prasonissi and the Seven Springs.