I had a fantastic time at Michael's place and would happily stay there again. I highly recommend it.
The location is perfect. It's right in the middle of the London with the Covent Garden tube literally around the corner. Yet it's on a quiet side street, so it isn't loud at all.
The room was clean and had everything I needed. For example, Michael provided power converters (I'm from the US) and many guidebooks describing the city of London. And of course there were towels, blankets, etc.
Michael himself was incredibly hospitable and fun to speak with. He provided breakfast, tea, and snacks. He also gave good local recommendations. He's a model for how an AirBnB host should be.