Wait! Before you book Cannakale, there is a great place right at ANZAC.
It really depends on why you are going and what you want to see.
If its the British lines further south at Helles the Cannakale maybe best, but if you want to see the ANZAC lines then Kabe Tepe would be fascinating for you. Its a
fishing port at the southern end of the NZ line (which was in the right flank of the Australian line) and is about a mile or so from ANZAC Cove. So you can walk it. We walked it every day for two weeks and it was a truly fascinating experience to be so close.
The port is at 40 12.1524 N 026 16.1184 E and they only speak Turkish, do not have a
radio and its very, very
cheap. the dockage is stern to and there is plenty of room for a cat either stern to or alongside. but its not a marina, its a
fishing port and ferry terminal (for the ro-ro that goes to an island off the coast which is a wonderful days explore - I don't think they have ever seen a tourist!). You just
motor in and loiter inside an gibber like a tourist until someone points out a spot to you (generally on the southern or south eastern wall).
The fishing port has a restaurant that's feeds the workers during the day and the romantics at night... the meal to go for in the day is like a platter de jour and is huge.
Photos here..
http://ourlifeatsea.com/2010.1.html
The
photo attached shows the layout of the SE section where you would likely tie up, behind is the admin building (deserted except for one office)