Hi,
We went on a private boat trip in August. It is based in
Icmeler called Bayram Boats. They went all around the area with plenty of stop offs for swimming. They provided goggles/toggles too. It was an excellent day and they provided a really nice meal which was included in the price. They also sold drinks/alcohol on board. It was very reasonably priced but obviously the more people that go the cheaper it is. They are on Facebook and were a lovely couple who couldn't do enough for you. I would highly recommend them.