If there was an option to give more than 5 stars then I would. Mar's place is in an amazing location right next to the main street of Sisli. With shops, cafes, restaurants all at your doorstep, there is no need to walk too far if you don't want to. It is surrounded by excellent transportation options like buses, the metro and taxis. If walking is for you though, then it's an ideal location to walk to Besiktas and other areas like Taksim Square if you enjoy the exercise and hilly terrain of Istanbul.
I have stayed in many Airbnb over the years but Mar has to be the host with the best communication skills. She was always ready to answer and queries and always had some great recommendations from a locals perspective.
The apartment itself is very spacious with a balcony, bathroom, 2 bedrooms, and a kitchen/living area. The couch also doubles as a futon. With the balcony and bedroom offering some great views of the local area, it would be incredibly difficult to ever pass up on this apartment. It offers great value for money in a relatively quiet neighbourhood but most importantly a safe neighbourhood.
If I do return to Istanbul then this is hands down the Airbnb I will book and I recommend anyone else does too. 5/5 stars.