Je ne sais pas du tout. Il y avait très peu de visiteurs au mois de février et l'eau était très fraîche. Je ne sais pas si certains oseraient s'y baigner même en juillet août. Ceci dit, ce ne sont pas des eaux "calmes" sauf quelques rares petits coins.

We arrangement a half day tour through the hotel we stayed at.

Start of the boat is at 1 PM, but you should be there 30’ before the start.

We did it on the Antalya city tour, see Jet 2 rep, 2 waterfalls, cable car ride, lunch in the town, boat trip around bay and an hour to shop in the town. All for 55€ p/p, on a/c coach with brilliant guide.

Duden waterfalls is free to enter

Don't need the boat trip go on the local dolmus cheaper and gives you a taste of how they get about

You can check with your hotel if they arrange a tour over there

Where in Turkey! The water falls is inside the Antalya city!

We caught a bus, VC30 to upper Duden waterfalls which cost 3 TL p.p. one way. You can purchase a card from the driver when you embark which costs 12 TL and covers you for 4 journeys - we purchased 1 card and tapped twice to pay for 2 people. The bus stand is a 15 minute walk from Hadrians Gate, and drops you off 40 minutes later around the corner from the entrance to the Upper Duden waterfalls. The falls itself are stunning, and you can easily spend a morning or afternoon taking in the breathtaking views. There are a few shops selling delicious local food and drink before you enter the park. You an even walk behind the falls, there are a lot of steps to navigate, so would be difficult for those in a wheelchair or if you have difficulty walking. You can see the waterfalls soon after you enter and this area is easy to navigate for all abilities. A great place to visit if you are in Antalya