Hi there.
Here is a thread I contributed to a few day ago.
marmaris turkey
Turkey is BIG.
It takes hours to get anywhere so the best place to stay is where there is good diving.
I've only ever dived in Marmaris Bay in Turkey. I keep going back for more, so it must be ok!! I don't even consider travelleing to other locations. You could pop over the peninsula to the Gulf Of Gokova. I believe there is some diving there.
The Bodrum area has some old Naval boats which were sunk as dive attractions a year or so ago. Look on Youtube for some video.
There must be many many wrecks within the recreational limit but I don't know of any worthwhile ones that are legal to dive. There was a great fanfare of publicity when Turkey lifted it's almost blanket ban of diving in all but a few restricted sites. They wanted to open up the coastline to dive tourism to rake in more Euros. I haven't seen anything exciting appearing in the press about great new dive sites. But then I haven't particularly looked.
Paul