Gorgeous flat - it has a lot of character through its decor. It's also conveniently within an 8 minute walk to the main street in Beyoglu with lots of bustle. Note this is the opposite side to the attractions like the Bazaar, Blue Mosque, Aya Sofya etc. This is more the nightlife/shopping district :)
The 'Hitler' cat with the funny moustache is also adorable and super friendly - she's always sitting outside the door at night wanting to come in because that's where she usually lives.