Situated in Bornova, a five minute walk from the Sanayi Izban station, Originn is a large, industrial feeling coworking space with a range of options for hot desking, fixed desk and private offices.
Desks are large, wifi is strong and there is an on site cafe serving coffees throughout the day as well as on site kitchen with a rotating daily menu. Most importantly during summer, the A/C keeps it pleasantly cool. If it does get too hot, there is an area for taking a nap also, which I did make occasional use of.
There aren't a lot of places to take calls in private, but the space is so large and open, it was never a problem. The surrounding area is something of an industrial estate, but there is a supermarket within 5 minutes walk as well as more options for food and coffee.
Even if you are staying on the other side of town in Bostanlı, I would say it's the best option in town and worth heading over for.