The location is great for getting to know the more relaxed side of Istanbul. There are plenty of shops and restaurant close by, public transportation is close and major tourist sides are within walking distance.
About the flat: beautifully decorated and well-equipped. The wifi didn't work and the bathroom door was broken (you could actually look inside from outside through the cracks), but Dilem was open to feedback and promised to fix it. So the place is perfect for one person, also works for two if you don't need privacy. We didn't mind, but just for future guests: rooms in the flats are small, particularly bathroom, so it might be inconvenient for people of bigger size. Also for many people it might be a new experience to use a bin for toilet paper. anyway, we had a pleasent stay!