Ollie's place is just as charming as it looks in the pictures. You will get what you see. Spacious enough, very cozy, with bedrooms, kitchen and bathroom very clean and comfortable. We also enjoyed some World Cup matches on his huge flat screen. Me, my wife and our two kids (7 and 5) spent a very pleasant week there. He's a sweet and fast communicator and check in and check out we're very smooth.
The area is quite (very) posh. Extremely quite. No shops or restaurants around, but South Kensington station is few minutes walking and it has anything you should need.
We recommend it.