Planning a vacation of about 16 travel days in Turkey for the end of the summer. We want to spend roughly half the time in Istanbul and then in another town/small city easily accessible from Istanbul. The first half in Istanbul would be a "City Trip" spending time seeing cultural events, mosques, historical sites, etc. The second half is the "Beach Trip" where we are a little bit more relaxed. However, while I like swimming and going to the beach, my husband has a skin condition that is aggravated by ocean water, and while he's happy to spend some time relaxing in the sun we're looking at places that have a little more to them than just a nice coastline.
For this reason, I'm thinking of Antalya or Izmir. Antalya seems to have the best beaches and might be a prettier place to visit in its own right, but Izmir seems more interesting historically/culturally and it's not horribly far from some nice beaches (though not nearly as close or as nice as those near/in Antalya it would seem). Really would like to stay in an area with an airport close by in order to reduce total travel time.
Thoughts or preferences?