The ancient city of Side is a must-visit, colorful for lovers of antiquity and wonderful for those who like to walk. There is a large parking lot at the entrance. We recommend walking there (~ 15 min.) to the center of the old town, and back to buy a ticket for cars (small cars with 5-6 seats). The ruins are impressive, especially the huge amphitheater (they did not go inside, since 17 euros per person) and the temple of Apollo. Walking through the streets of ancient Side is a pleasure, small stone houses, cafes, shops.
I definitely recommend you to visit. Many objects are under restoration, but you won't waste your time. Very cozy promenade, colorful streets. There are many places for insta-photos. I did not take excursions, as there is a detailed description of each attraction on the Internet. It is easy to get there by taxi and public transport. A taxi from the hotel costs both ways with an expectation of $ 50. And when you get to the bus stop, the taxi drivers stop themselves and offer to take you both ways for $ 20. So if you have 3-4 people, then it's easier to take a taxi, of course. Buses run frequently. I was driving from the village of Kyzyl-gach to Manavgat and there at the bus station I transferred to the bus to Side, which goes exactly to the Ancient city. The fare is 1 dollar or 1 euro or 35 lira. As a result, I spent $4 with transfers.