They are neighbours on the same peninsula, but they feel different. Çeşme is the working town: a harbour, a seafront promenade, a castle in the middle of it all and a ferry port. It spreads out along the coast to the beach area of Ilıca, where the sand is fine and the water stays shallow for a long way.
Alaçatı is a village a short drive inland and to the south-east. It is all about atmosphere: narrow lanes of pale stone houses with coloured shutters, boutique guesthouses, cafés and small shops, and a row of old windmills on the hill above. South of the village, the wide bay of Alaçatı is one of Turkey's best-known windsurfing spots.
Plenty of visitors stay in one and spend evenings in the other. Pick Çeşme or Ilıca for easy beach days with children; pick Alaçatı if you want to walk out of your door into a lively village.