We have known Ahmet since 2007 and he will be able to assist you in finding private villas (with private pools, AC, Wi-Fi etc.) to rent in Dalyan in 2024 and beyond. Airport transfers can also be arranged, if required.
Ministry of Tourism and Culture - Regulation on the Rental of Houses for Tourism Purposes
If you are looking for the new licence regulations for short term holiday rentals (daily, weekly, airbnb etc) in Turkey then have a look at the following website
as it has loads of useful information. It appears that agents and private individuals can apply for the licence and you are not mandated to use an agent, however your villa may have to be on the tapu and you will need to have residency to use the e-devlet system to apply for the licence. The information is in Turkish but translates very nicely into English using google translate.