My family and I from different countries got together in Istanbul and enjoyed our stay with Julia & Tarkan. We definitely recommend them.
They arranged our airport pick ups as well and I can say they are a professional company. They provided us required information and support smoothly and nicely. The communication went very well.
The apartment has a good location in a historical area and walking distance to Istiklal street. There are many good cafes and stores down the street. The apartment was clean and cozy.
The reason I’m not giving a 5 star is because the area is noisy in the late evening and early morning and I couldn’t get very good sleep but this is not something they can fix. Maybe you should take some earplugs with you if you’re a light sleeper like me :))