If you're planning to explore the Beyoğlu district, you wouldn't find a better place to stay.
The location is near perfect. It is about 100 meters from the metro station and 50 meters from the funicular station (which actually is a must to ride on just for fun).
The place is located at the beginning of Istiklal street and, as soon as you get there, you wouldn't have a problem finding a place to eat, buy something in a local grocery store, or exchange money. Another great advantage is that streets around the building are lit and spacious and you can safely walk there even in the late evening.
For the people who want to visit one of the famous Istanbul attractions - Istiklal street, you'd literally get a front-row seat. As I mentioned before the place is at the beginning of Istiklal, and has a perfect view of the street and the famous red tram just from the windows.
The hosts, Batur and Juliette, are very nice and welcoming.
The apartment is fully equipped and has everything to prepare food or wash your clothes, they even had a drying machine which came very handy.
And I should also mention their dog Ollie who is a charming and good-natured dog.
I will definitely recommend this place.
Thank you, Batur and Juliette!