would you guys recommend some accomodations with reasonable price in both greece & turkey? i've got very limited budget!!!

my itinerary: athens--mykonos--naxos--paros--ios--santorini---rhodes--marmaris--???--istanbul

also i've checked the ferry schedule for greek island hopping in july. i m afraid that there isnt any ferry available for the route (1)mykonos--naxos and (2)ios--santorini--rhodes. is there any other ferry company available for these lines? should i book the tickets before i go there?

can you suggest any "must-go" places on the islands and marmaris?

thank you dudes

btw, any suggestions for the unplanned part in my itinerary between marmaris to istanbul? thxxx