I stayed 2 nights at Paul's place. Like the other reviews say, it is very close to King's Cross/St. Pancras and Paul is a very welcoming and great host. He was also super fast to respond to messages. Thanks Paul for the stay!
Just as a FYI, there are other Airbnb guests staying there and no locks on the bedroom door, so if you are uncomfortable with the thought of random people possibly having access to your stuff, just make sure to bring a lock for your suitcase.