We stayed two days at Sam's flat.
A really nice place in an iconic building (Bow Quater) located in an ideal part of the city, especially if you are east London fan (walking distance to Victoria park, Hackney wick or Stratford).
The space is great with high ceiling, comfortable, clean, tidy and nicely decorated. Check-in was very straightforward as there is a concierge in the building.
Even though we haven't met him in person, Sam was very communicative and helpful. He gave us loads of tips for places to eat and drink. I would definitely recommend his place.