Mesut was very friendly and helpful, everything was as expected, except the size of the house because it is mentioned 5 people can live there, where in fact the house fits 4 people maximum!
In addition there is 1 bedroom so it will be crowded on the bathroom door in the morning.
I raised my concerns to Mesut, he offered a room for the last 2 nights in his apartment next door which is a gesture that I appreciated a lot!
I recommend this apartment for 4 persons.
Thanks for your hospitality, we enjoyed Istanbul.