I stayed in this location for about a month in the summer. It's a two floor apartment with a kitchen and living room, with three rooms on each floor (so six rooms in total). While it's small, it has everything you need. With six total guests, I wasn't sure how quiet the space would be but I generally didn't run into other guests that much - given that it's summer other people are probably out touring, working, seeing the city, summer classes, etc. so the place is pretty quiet and peaceful. The Airbnb is also well set up to minimize disturbances (clear rules about noise, cleanliness, signs posted everywhere, appliances shut off at 11 PM at night to minimize noise) which I appreciated. Cleaners come once a week to make sure common space is cleaned up.
Carlos is super communicative, he's around the area and really responsive to messages about anything you need.
I also found the neighborhood to be really calm, safe, and peaceful and was not afraid to walk around at night or take public transport home late. You won't have too much of a problem getting in and out of the city even though it is a bit of a trek from the west side attractions.
I would highly recommend this spot and will look it up next time I'm back in London!