So, the place is in a very convenient location. Very central, but still quiet. The car and people noise from the streets is very minimal which is a big plus and not at all a given in Istanbul. Very comfortable and high value for money.
HOWEVER, I'll have to say that the vintage approach of the shower with the cursed UK style faucets is always a definitely minus for practicality, although a small one. Additionally, the shower works somewhat randomly. Most of the time it was great, pressure was good and water was warm, but I had one shower where the pressure was negligible and the water temperature kept fluctuating between hot and cold (sometimes being cold for so long that I thought they just ran out of hot water altogether, only to warm up again in second after a while).
They're very attentive to any problems, and reachable at a moment's notice via WhatsApp or other means. If you're willing to overlook some possible minor problems (and perhaps if the shower does not work properly, try again in an hour...) you should have no problems here!