Guven sent us the contact details through whatsapp; we arrived late in the evening anyway he was waiting for us. We spent in Guvenś house 4 nights and we really enjoyed it ! The apartment wasn't spacious enough for 5 people but very clean and situated in a great area so we could walked to Grand Bazar, Topkapi palace, Hagia Sophia, Blue Mosque. Lovely terrace and lots of local restaurants around.