Helen is a wonderful host!
Her flat is in an ideal location for seeing some of the most exciting things London has to offer. She is warm and friendly, answering any and all questions you may have. I learned a lot from her and am thankful I had the experience of staying in her AirBnb. The flat itself is very clean, comfortable, and beautiful. Any and all of my accommodations were met. The environment is very open and there is lots of sunlight.
If you are considering staying at Helen's place, go for it! you wont regret spending your London trip here :)