Cristina's place is the perfect place which is accessible to both tram (downhill) and metro (uphill).
Her place is at the ground floor of the building.
There are a lot of coffee shops and stores where you can buy your daily needs as well.
I loved cooking in the kitchen as it is equipped with basic needs and spices as well.
Though the location is perfect, the uphill walking may not be suitable for elderly as it is a steep uphill going to taksim square.
It was a great experience staying in Cristina's house and I would definitely come back!