Listing said self-check in at 3pm. We had to wait almost 3 hours for the host to bring us the key. Once in the flat, it was super dark in the living room, the bed seemed slept on and the place was really not clean and super badly maintained. After 20 minutes, we left after informing the host and Airbnb support. The support was not great either - almost had to pay the whole stay.
One of the worst Airbnb experiences I've had.
I frequently come to London and always stay in Airbnb - the only issues I've had are with 'professionally' managed flats. Definitely something to avoid.
On the positive note, the host was ok with communication although more concerned with his revenue than customer satisfaction.