I've spent a lot of time in Airbnb's over the years - both long and short stays. I can confidently say that Marta's place is THE best place I've ever stayed in. It was one of those rare circumstances where the home is better than the photos - the light filled top floor was a perfect place to get work done, relax, and unwind after long days in the city.
Considering how high hotel prices are in London the 'bang for your buck' factor was off the charts here. The location is also undersold - it's in one of the most up and coming areas of London. Tons of great food, coffee, and drinks options nearby.
Highly communicative, not intrusive, and checking in/out was a breeze. Stay here if you can!