I stayed almost a month. I had a good stay, and the position was great, I really enjoyed Spitalfields. The room is small (it's a student accommodation), but it's large enough if you travel alone, and it had everything I needed. I appreciated the ability to receive mail and to use the paid washing machine and dryer. There's no hair dryer in the room, but I could buy one at the nearby Boots pharmacy.
My room had some constant background noise, couldn't tell if it was from the ventilation system or from the fridge, and there's more constant background noise if you open the window. My room also got quite hot some days, during the heatwave this summer, but that was expected. It was a minor annoyance overall though, and was totally compensated by the great view from my window. I had no problem to work remotely from the room.