It's absolutely great location. You can reach everything you need fast. Harbour is 15 min walking, Marmaray 5 min ,Kadıköy party area 12 min. In the same time it's quite apartment, not so hot and might be heated well when cold.
Good choice for the long term.
Fatima is very friendly and helpful, she is replying very fast and always ready to provide some extra stuff you may need.
Thanks for the accommodation. I spent great time there. And I already miss Istanbul.