Amazing stay in Istanbul.
The apartment looks better than the pictures and it has everything that you might require for a short and even prolonged stay. Check in and check out were easy and communication with Tuna via the W/A messenger were fast and efficient.
The location is fantastic! It's a short walk from the ferry to Kadıköy - the trendy neighbourhood with amazing vibe, 15 minute walk from Beşiktaş where you will find plethora of coffee shops and restaurants, 5 minute walk from a funicular to famous Taksim square and a tram to historical part of the city.
10/10 would recommend.