Do I have to mention the stairs again? :)
Jokes aside. We managed the sixth floor with a pregnant person and a child, so it was doable. Only getting the suitcases up was hard.
Some earlier guests complained about the noise, but I'd advise anyone looking for an AirBNB to check the surroundings. This apartment is in the heart of Istanbul. Istiklal Caddesi (the shopping mile) and Taksim (the party mile) are just a few steps away. You are also close enough to walk to Eminönü, which is the historical citycentre of Istanbul.
The rooftop is beautiful, we had most of our breakfasts there and enjoyed the sunset up there.
Adrian also was a really accomodating host. He let us check in early and even ordered water for the apartment.
Thanks for the stay!