Odunpazari is a picturesque neighborhood of Eskisehir, a mid-size city easily accessible by train from Ankara. It is very walkable once you arrive, and you can wander around the colorful houses, eat ciborek, and buy handicrafts. There are a lot of museums in the area; I visited the glass arts museum, hamam museum, OMM (modern art museum), and the meerschaum museum. I would recommend spending half a day here and checking out the rest of Eskisehir after.