Lizzy's flat is just like she says it is - cosy, with a great kitchen, a neat (and clean) bedroom, and cool bathroom(s). I saw another reviewer mention that the wall to the street in the bedroom is thin, and yes, it is, but that wasn't an issue for me - throw on some soft music or headphones you can sleep in and it isn't hard to completely drown out the noise (which isn't that loud anyway).
The location of the building is in a cool area, the building itself feels very secure. Just as described the bus stop is just down the street (a 2 or 3 minute meander), and the overground and tube are both a reasonable walk (10-15 minutes) away, which is great because you have a lot of options to explore for transportation. On the same street you can even rent city bikes to ride around on - so again, lots of options!
I only got to meet Lizzy a few times while I was there, but she's lovely in person! When I first booked it was a little delay in communications (which, with a 5 to 6 hour time difference is totally understandable). Even with that tiny hurdle, Lizzy gave great directions, explanations, tons of pictures to help get your bearings - and when I was in England she was quick to respond and answered my questions (which were very silly to me but Lizzy insisted not to worry about asking questions).
All in all it was a really great experience!