The location is the best place to choose in Istanbul. Proximity to Istiklal Street and Taksim Square with a flat surface (no uphill) is the prominent advantage. There is also no street noise during the night.
Halil is a very kind person. I even arrived two hours earlier and he told me to enter the house and not to wait outside. He arranged a taxi for us to return to the airport and answered every question we had.
The unit is on the third floor and if there is an old person with you, it may be difficult to climb up the stairs, but we were young and it was not a problem at all.
The water in the house is very hot and the house was also clean, but if you plan to stay for more than two or three days, it is not possible to prepare food because the electric stove is single, and the house is a little smaller than the photos (more similar to a simple hotel room than an apartment).
But for a short stay in Istanbul at this price, it's great.