We had a great stay! Our check-in and check-out procedure could not have been smoother, metro stop and bus stop close-by but everything is walkable: the location is nothing short of excellent, and Irem allowed us to check-out later than usual without any hassle (thanks again Irem!).
What's also nice is that while this location is in the heart of a vibrant, busy part of the city, the bedroom comes with two sliding wooden doors that block most of the sound. In short, if sound is your enemy while you sleep, you can expect a good night's rest here (compared to other mid-city apartments).
There is also a downside though: the bedroom and en-suite bathroom do not have any windows. So if you actually do close that sliding door, it might get stuffy.
I wholeheartedly recommend this apartment to travellers who want to spend most of their time roaming the streets in Istanbul, and then at the end of a nice day be able to walk home from the restaurant/bar. If you, however, travel with young kids, people with allergies or simply can't sleep without the windows open, maybe this apartment is not for you.
See you again Irem!