While I didn't meet Nana, she was easy to get a hold of and always replied quickly. She was always honest and upfront. Kate, who helped with check-in, was super friendly and helpful.
The flat it self is great! Lovely rooms, quiet, with lots of fresh air. The neighbourhood is wonderful with plenty of useful amenities nearby - a quick walk to cafes, a park, groceries and metros. It can be a bit of a trek to central London (~45mins to London Eye for example) but that's to be expected this far out but the wonderful flat was worth it.
Would definitely recommend!