I didn't meet the host as check in and access to my room was via door codes. This was very good for me as it allowed me to enjoy London all day and then arrive late in the evening without any trouble. The room was as expected, clean and tidy with everything in the pictures. Kannell was very responsive to my messages and sent me a message after booking that covered the obvious questions. e.g. how to use the door codes, the wifi password, arriving / leaving.
My only criticism is that the Visitor Policy. Any visitors, even if they only stay 'for a short time' will cost you £20 per day per visitor. This seems a little strict as the wording suggests that even someone helping you in with your bags or having a cup of tea could be liable.