Ser's room was very affordable and well-positioned next to the tram line, which connects you to the rest of Istanbul. Even better is Serkan himself: he let me use his public-transit card, showed me how to put more money on it to use, gave me tips and advice about his neighborhood, and even picked me and my friend up late at night during a problem we had about how to call a taxi (ugh). He is truly a global citizen and embodies the Airbnb ethos. Book with confidence.