We spent 3 nights in Okan's apartment in Istambul. The communication was great and very fluid, with very quick responses. Everything went fine, from arrival and the taxi pick-up the host had arranged for us, until the drive back with taxi to the airport. The host Okan is very friendly, helpful and absolutely reliable. The apartment is really huge (can host comfortably up to 6 people) and exactly as in the pictures. The kitchen has basic equipment (fridge, microwave), the shower works fine, with warm water and good pressure at all hours. The wifi was also good. The best thing was the big living room with a lot of sofas to chill on after a long day of sightseeing. But probably the most important is the location, in the heart of Sultanahmet, a few steps to the most "touristic" tram line 1 (steep and narrow streets though, but that's the charm of Istambul...), very close to Hagia Sophia, Blue Mosque, Great Bazaar etc. I can recommend this apartment without hesitation.