In reply to Max_01:
I don't think there is anywhere better than Kalymnos for sport climbing in those grades (I'll be interested to hear other suggestions)
Had two weeks there in May with my wife, who climb's 4s and 5s, while I climb in the 6s. There are loads of crags where we could find numerous routes that satisfied us both - Arhi, Sea Breeze, Noufaro, Katherina, Kastelli, Oddyssey and Afternoon spring to mind. The easy routes are often really nice, usually slabs on positive holds and not at all polished. Actually very few of the routes on the island are even moderately polished, and it usually only those which are used as warm-ups for harder routes.
All the crags mentioned will be in the shade til lunchtime, at which point you head down to the beach for a well earned swim.