Please don't pay £200 per night for a hotel in London. That's crazy!
My wife and I would love to host you in our large, clean, modern apartment instead. We have fast, reliable, internet and are close to both the tube (10 min walk) and the DLR (5 mins).
My wife and I are both working professionals. She in architecture, I in marketing. We love having guests over and helping them feel welcome. You have your own bathroom, bedroom, and access to the awesome balcony, living room, and kitchen.