I stayed for 9 days in Istanbul, but I really felt like home.
The apartment looks great, it has two bathrooms, the kitchen is fully equipped: coffee filter, microwave oven, dishes etc.
Also to position from my point of view is great. It is like 150m from tram station. From there you can reach the most important objectives of Istanbul very easy.
The owner is also very friendly and helpful.
I would 100% recommend this apartment if you wish to visit Istanbul.