I was traveling from Yalova Bus Station to Sabiha Gokcen Airport in the Asian part of Istanbul. Buses run very often. Every 15-30 minutes. Travel time is 45 minutes. The bus station has ticket offices for various bus companies, a waiting room, a toilet, and shops. Buses pull up to the platform and bus station employees monitor the boarding and loading of luggage. Everything is smooth and clear.
A very good bus station and it is good because there is a passenger at the bus station, such a small man is very good-natured and helps everyone. I really liked the station because of him!!