It's an excellent price/quality balance regarding the location and the interior design concept of the place. People from Emre's staff I communicated with at the neigbouring Ottopera hotel were very kind and helpful. I received a professional and friendly attitude and what's most important they spoke English fluently so we could communicate (I was surprised that communication in any other language than Turkish was a major issue around Istanbul and it was a problem even at four or five star hotels).
Location is realy 5 mins. away from Taksim square but the place is actually pretty calm and quiet. Apartment is stylish and had everything I needed. Wi-Fi was also good and you have access to Android TV apps. Place is good if you travel alone or for a couple.
Only thing I can recommend to future guests is to have in mind that the shower cabin space is limited and also you have to wait about a minute so the hot water "comes" to the shower. You might think at first there is not hot water but that's not the case. Just be patient!
I would visit again. Thanks to Emre and his staff for professionalism!