Alexandra's apartment is really beautiful, comfortable and close to plenty things to do. It's also close to lots of buses and the tube, making it really easy to get around town quickly.
The space is managed by a third party instead of the host herself, so be ready to communicate through Hostmaker. They're helpful and efficient, just note that you won't talk to them through airbnb.
Also, the bed is quite comfy! A very important note :)
I would absolutely stay here for my next visit.