We really enjoyed our stay here and even extended twice.
The house is really comfortable and rather large. It has two proper bathrooms, a large living room, a cozy bedroom and the second bedroom doubles as a study room/wardrobe. Only thing is that the bed in the second bedroom is a fold-down couch so it's not a full size bed. But if you really like your partner, it should be alright. Dishwasher, washing machine, fast internet, all works perfectly.
The area is upscale residential with a lot of fancy/hip cafés. Lots of fancy cars and almost every apartment complex has a private security guard. So pretty high-class society. Only thing is that almost no cafe has an English menu so bring your phone with google translate. Though cappuccino means the same in turkish so you'll be alright with simple stuff.
The house itself is free standing so no noise from any neighbors upstairs, downstairs, left or right. It's really a bit quirky being hidden behind another high-rise building, seemingly the only house like this in the whole neighborhood. Very cool. Beach is 10 minutes walk. amazing to see the sunset from there, there is a basic café, a well maintained beach, an amazing playground for kids. Very nice to spend the last part of the day.
Getting to the tourist hot spots is easy enough with the Marmaray train from Erenköy station, which takes you to the European side in 15 min or you can go to Uskudar and take a fun little boat ride across the Bosphorus to Besiktas for example. All in all, most tourist hot spots are 30-40 minutes away which isn't too uncommon for a huge city like Istanbul. So you won't be in the middle of all the craziness, coming home in the evening is pretty nice as the area is quiet. But if you come to party or just for a couple days, it might be more convenient for you to stay in the center on the European side.
All in all, very nice place to hang out and have as a base if you're exploring Istanbul over a longer period.