A few things that you must do when you are in Marmaris include; visit to the Marmaris Castle, boat excursions, enjoying sun at beaches like; Cennet Adasi and Dalyan turtle beach, shopping, trips to water parks, trips to other nearby areas like; Ephesus, Pamukkale and Fethiye, cruises to turquoise coves, visit to ruins of ancient cities, and much more.
Marmaris is also famous for its cuisine. You can find many good restaurants that offer Turkish as well as cuisines from all across the world like; Italian cuisine, Chinese, American and many others.
Hotel accommodation is also readily available in Marmaris especially in the City Centre.
All hotels found in the City Centre are considered as lively on the other hand if you are looking for a bit more relaxing accommodation then you should look for an accommodation in the area of Armutalan. There are many websites that offer cheap hotel accommodation in the city of Marmaris so it is better to book your hotel well in advance in order to get the best accommodation for yourself.