We tried two around Bodrum and found that one didn't respond (Blues Yachting) and another are notorious crooks (Gino Yachting - known to take the deposit or the whole amount and not finish the purchasing
We ended up dealing with Peter at Sunbird Turkey
in Marmaris, sunbirdmarmaris at superonline [dot] com and can't recommend him enough. He's a very approachable and detail-oriented Einglishman. The whole process was very satisfactory with contracts, guarantees, trustee accounts. Sunbird's main office is in UK, so the approach is European.
Marmaris is only a 3.5 hour drive from Bodrum. You can either take the highway (Bodrum -> Mugla -> Marmaris) or take a ferry
to Datcha and drive to Marmaris through the peninsula. Both roads are gorgeous.