In all honesty, I loved my stay with these people and enjoyed it to the max. Ece and Gunes are amazing people and were helpful in every way. They made my stay in Istanbul a lot more memorable.
They're friendly and understanding, the place is quite clean and close to metros and public transportation. There are a lot of vegan/vegan friendly restaurants around the area if you're a vegan.
The apartment is clean and neat, it probably has everything you might need during your stay.
Last but not least, they have great taste in music, and also have interest in art. I look forward to coming back and visiting again.