I had an absolutely wonderful stay at Emma's.
Not only because the location is ideal to quickly get around in central London, the room and the bed and all other amenities are all great, and Emma makes you feel very welcome right away (without any pressure to socialize), but also because it was just so nice to talk to her about all kinds of social matters. She has an open mind an a big heart, but is certainly no push-over.
I can highly recommend staying with Emma (just do make sure you meet the very justifiable conditions mentioned in her listing before booking) and I'll gladly return in the future myself, both for the city and the conversations.