I had a great experience.
Ana was very friendly, flexible, and would always ask if everything was OK.
The apartment was great, spotlessly clean, comfy bed and pillows, en-suite toillet/shower and a small kitchen with everything I needed for my 2-week stay (microwave oven, cook, fridge, kettle, plates, glasses, clutery, pans, everything - even a washing machine and a drier).
The location was great, just accross the street from a pub with great food (The Canbury Arms) and within a short walk from Kingston station & high street, the riverside and Richmond Park.
I couldn't recommend it more highly.