House is great, pictures are very accurate. Our rooms and facilities (inc. bedrooms, living room, bath, toilets) were very clean and that was nice. Some important notes though:
1. you'll be staying in a house with the host so if you are noisy, have kids etc, you should be aware.
2. Kitchen facilities are minimal. I mean those prepare for you in the living room inc minibar fridge, electric kettle, IIRC microwave oven and bread toaster (hope I didn't forget anything). No stove, oven etc so no serious cooking there, not even an egg I guess.
3. Host was very responsive and very kind.
4. Transportation to attractions in London would take at least 30 min in each direction, depending on the specific attraction so bear that in mind (you can check it by navigating from the home address to attractions in London using any maps app, for example).
5. Check-in / out hours is super flexible.