I stayed with Alex and his flatmates in December of 2018 and it was a lovely stay! It's a large warehouse space as described, with rooms along the perimeter. The bedroom was simple but nice, and the bed was really comfy even though it squeaked a little (no big deal). I got some great sleep in the bedroom. Alex was super nice and responded to my messages very quickly. There were fresh/clean towels and linens and they were very helpful. I would stay there again. The only real bummer about this spot is that for a foreigner, it's not really close to many cool things to explore in London. Getting to Shoreditch takes about half an hour which is the closest really happening area. It's about a 10 minute walk to the Overground train which can get you most places.