Perfect place to stay at in Istanbul - it‘s central (for Kadiköy - all the bars etc are just around the corner and down the street), clean, quite large and Serpil‘s place offers everything you might need during your stay, just don‘t forget to bring your own toothbrush. ;-)
Serpil herself was a great host, checking in and out was more than comfortable and uncomplicated and communication with her was really easy via WhatsApp. She responds very fast, so you don‘t really have to worry about anything as she will answer all of your questions :-) We would definitely stay at her place again!