I stayed at the apartment for about two and a half weeks. The pictures are accurate. Space is clean and in a great neighborhood. It's quiet at night but at the same time just a short 5-10 minute walk from shopping, restaurants, and more.
Martha was out of town when I arrived but I was greeted by a friend Nakul, who is part of a company called Hostmaker that assists Airbnb hosts. He was very polite and even brought me a few pastries (I was late seeing as the line at the UK border was very long at the time of my arrival). He was helpful in answering questions throughout my entire stay.
The bed is really comfortable and the space is open and airy. The only two things that I wasn't a fan of was the shower and the Internet connection. The shower is clean, but if you're tall it might be hard to use as the hose is really short (I had to sit/kneel to wash my hair). I had some trouble connecting to the wifi, and although Martha was very helpful trying to get it to work, she ended up having to send me a new router which arrived just a few days before my departure and I didn't have time to set it up. There was a non-password-protected wifi connection which I was able to access, however.
Overall it was a great experience and I'd recommend it to anyone who wants to be close to the tube/shopping but also wants some peace and quiet.