We booked a private tour for 4 people to Pamukkale with Ali from Kusadasi, and had such a great experience. Ali was genuinely nice, had a great knowledge of the area and history and fielded all our random questions. While it's a long drive there and back, it's without a doubt worth the trek. The large van was comfortable, driver was very safe, and Ali made the tour very memorable. And if you're interested in leather, he had a great store that was optional to stop into that had a great variety of quality leather jackets and products.