I stayed in this European sized apartment for over 70 days. The unit is a nice "foot on the ground" apartment on the 1st floor above ground and located in a busy working class neighborhood. It is centrally located with very easy access to Istiklal Street, taxis, the metro, and ferries. From the apartment, you can easily walk all of Istiklal from Taksim Square to Galata Tower in about 30 minutes.

There are many local (non tourist) small shops and restaurants located within walking distance. The 'pide' shop on the frontage road (Taksim Pizza Pide Lahmacun Salonu, less than 100 meters) is excellent. The owner and family speak excellent English, were helpful, and very nice people.
Two points in the interest of full disclosure:
1. Digital nomads should be aware that the wifi signal is shared and not reliable for remote work. (There are multiple cafes nearby with fast wifi.)
2. Turkey has a high proportion of smokers and this unit will not work if you are sensitive to tobacco smoke.
Overall, the place is excellent as a home base for exploring Istanbul. I enjoyed my stay.