I'm not sure what's left to be said about Phyllis's place that hasn't been said. It's in a great area for experiencing London. You're a short walk to a couple different tube stations which is great, but it's even better situated to experience many of the London sights and villages by foot. The flat itself is well appointed for travelling. It feels more like staying in family friend's home then in a BnB.
The bed was extremely comfortable which for someone with notorious back problems, was very appreciated. She provides a versatile diy breakfast with different options in breads, milks, cereals, and fruits. It was perfect to get the day started. The bathtub was also lovely for a long hot soak, and Phyllis provides lot's of extras to make it even more enjoyable (epsom salts, different bubble baths).
I've had the privilege to stay in AirBnB's all over the world, and this was one of my favourites. I would definitely recommend!