I and my wife have stayed for 5 days in this apartment.
The location was awesome. There is a tram, bus, and ferry station nearby, so you will be able to reach any part of the city without any problems. There is also a big supermarket nearby. The place is really quiet, but in just 10-15 minutes by foot, you can reach the most crowded and popular tourist place in Istanbul - Istiklal street where you can find all kinds of shops and restaurants.
Also, it's a great place if you need to work from there. There is a big table and computer chair in the appartement. The internet connection was great, I participated in work video calls without any problems.
I highly recommend it to you.