We are a young couple and have spent a week at Rosies place in December.
Short version: It was a great stay! We'd come back anytime!
Long version: We have been given clear instructions on how to find the flat and how to contact Rosie via AirBnB and even an own website in advance. Upon arrival, we had a warm welcome by Rosie. Our rooms were very clean and spacious, amenities like slippers, towels and tea/coffee were provided, the bathroom was very clean too. The room itself had a great view around as the flat is located quite high and the windows are huge. The bathroom is shared with Rosie and one other room. Rosie was a lovely partner to chat with and had many recommendations on what to do in London. We had a beautiful breakfast in the living room each morning (9-10am), we could choose between tea and coffee, there were many, variating sorts of jam and marmelade and toast, as well as egg and cereals (we strongly recommend Rosies homemade granola!). Rosie even made porridge one day.