Best swimming spots in Istanbul — Prince Islands vs city beaches

The free Caddebostan Plajı beach on Istanbul's Asian side compares well to the Prince Islands — water felt slightly warmer, no jellyfish, and no entry fee. A solid alternative to avoid ferry costs and paid beach clubs.

The paid beach club Asaf on the islands was a letdown — jellyfish in the water and unclear value for money. Visitors who tried the free Caddebostan beach afterward found it far more satisfying.

On the Prince Islands, head to the side opposite the ferry pier for calmer, cleaner water. The rocky beach exit is rough — water shoes are essential. There's a pier but no ladder to climb back up.

Florya beach is not recommended for swimming — water quality is poor enough that even in hot weather many visitors skip it.

On Büyükada (the largest Prince Island), you can reach Yörükali beach by taking the city ferry from Kabataş, then a free island shuttle boat. Beach entry is paid. In mid-June the water was cold but clean.

The first island from Istanbul has a quiet cove with clean water on the far side from the pier. You can walk across the island or take local transport. Waves pick up near the ferry dock in the evening, so swim earlier and further away.