Handan's place is a 5 min walk from both Taksim square and Istiklal street. The place has a bohemian feel with plants and has a nice sitout area
Onur and Handan were very welcoming and helpful, accomodating us with a late checkin when we got delayed while driving to Istanbul and checking up on new year's eve when we seemed to have a problem with the heater
They even accomodated us in another room in the building when we extended our stay for another day