The apartment was great, and in a great location just across the street for Dalston Junction Overground. Lots of nice cafes and restaurants in the area. The only negative thing was the loud noise from traffic, sirenes and people from the main street outside the window - it kept me awake most of the first night. So be sure to bring earplugs. Otherwise an excellent apartment, with great facilities.
Communicating with Iason was efficient and easy, and he provided us with a lot of useful information about the area, directions and the apartment.