You have your own terrace with a bosphorus view!!
AND there is a shared yard next to the water with a small dock! You can swim, sunbathe and barbecue there.
This water mansion (yali) is a historical one. You'll have one of the best views of Istanbul.
Sarıyer is an old and safe neighbourhood. Metro station is 12 min. away by bus. There is a free shuttle bus to Koç University. There are 24/7 open small markets/supermarkets/pharmacies /cafes/restaura…
Public transportation is very convenient. Parking space is available.
There are different ways to get home from the airport. Here is a list for you: