This place was great. Me and my wife stayed here for almost a month and we left really pleased by the whole experience.
1. Great area, very far from main touristic locations, so things are affordable, people are nice and don't try to swindle you. Even the taxi drivers are very genuine.
2. The flat itself is great, lots of light, high security, has all the essential cooking utilities and utensils, comfy bed, with all the linen and towels you need and even the sofa turns into a bed. The internet here is pretty fast at around 20mb. The washing machine is nice and quiet too. Nice and powerful shower, good heating, balcony etc.
3. The building complex has a free sauna, gym and swimming pool. Very good security too which was very reassuring. The hallways were being cleaned at least once every 2-3 days.
4. There are pizza shops, supermarkets, kebab shops all within walking distance. And if you need to go central, you can just take the 146T bus all the way to Aksaray.
5. Angie was very good with communication, and Timur who checked us in was a very pleasant chap, he showed us around the house, gave us some tips on how to get around and where to go for grub etc.
This place is definitely worth every penny.
The only negative was, me and my wife couldn't sleep very well during weekdays because of the schools nearby. They play very loud music every 40-50 minutes starting from around 8:30-9am in the morning. We kinda got used to it towards the end, but if you need a good night's rest, keep the windows shut. My wife can't sleep with windows shut so we had to keep it open. Weekends were nice and quiet though!
Thank you Angie and Timur for a really great stay. We will be definitely coming back here if we come back to Istanbul.