Why Not visit Rhodes while in Marmaris since it is only one hour away. You may spare a day for Rhodes while in Marmaris. Sea buses are available everyday of the summer from Marmaris Marina to Rhodes.
What to do in the 5-6 hours in Rhodes?…:
The “old city”, reachable on foot from the pier will take at least 3-4 hours. Here is a list of places worth seeing in the historic city surrounded by city walls:
You may enter the historic from the St. Paul or Freedom Gate. Temple of Aphrodite, Archological Museum (Rhodes Museum), Grand Master’s Palace.
There are also artifacts from the Turkish era in this historic city. Among these are the Suleyman Mosque, Aga Mosque, Ibrahim Pasha Mosque.
All around the historic city city there are also many shops. You can buy all kinds of souvenirs. When you are tired or fed up from the heat there are many gardens and cafes you can rest for awhile.
The Rohes cuisine has similarities to Turkish cuisine. Musakka is the most popular one. But it has nothing to do with the Turkish musakka.
Let us note that prices are about 50% more expensive than Turkey. If you still have time, you can either take a taxi or walk to the new new city. A reminder: Taxis are very cheap. It is almost half the price of what it is in Marmaris. Cafes line the New Bazaar in the new City, Mandraki pier opposite and the three wind mills on top of the pier’s breakwater may be of interest.
If you decide to spend the night, you will find many hotels on the eastern part of the new city, facing Marmaris. The taverns where all the entertainment is are also in the new city.