I will start my review with the wise Turkish people's saying: Cevahir is Istanbul, Istanbul is Cevahir! The thing that Biray didn't emphasize enough is that her neighbour is only the best shopping-entartainment mall in the entire world - Cevahir! :D
On a side note, there really isn't anything that a guest could complain about while staying at Biray's residence. The location is perfect, since it's also 5-10 minutes on foot to metro, that gets you to Taksim in just 2 stops. The room is nice, and so is the toalet, kitchen, and the balcony. Only bit of an issue can be a WiFi which reaches to around the door of the room. Regarding the hosts, Biray and her cat were very considerate and polite. We didn't get much of a chance to get to know Biray very well, but she certainly is a professional host and always ready to give you useful advices and insights of her city. Overall, for the price we payed, this place is a true bargain.