Duncan's flat was great for our needs. Check in was fairly easy with a lockbox system. Unfortunately, we did not meet him in person.
The best thing about the flat is the indoor/outdoor flow from the great room and living rooms out to the deck. We spent most of our time sitting by the canal watching the boats go by. That was a truly unique experience. What's also great is the decor and look and feel of the flat. Very open and roomy for a London area flat.
The flat was super clean. It looks as though it had been recently renovated, as well. The downstairs bedroom offers a super comfy bed, however, you do need to climb into it. If you have mobility issues, please keep that in mind.
We didn't try any of the public transportation, opting for quick hops using a car service (Uber). The neighborhood has the necessities, but I recommend nearby Notting Hill or the Portabello Road area, which you can get to easily with Uber. We had a nice time exploring these areas. That said, we had a blast dancing at the Paradise Pub up the street.
I definitely recommend Duncan's flat if you are visiting London. Definitely a unique place!