We enjoyed our stay with Max and Billie. They were quick to communicate with during our stay and with details on check-in/check-out. The location was wonderful as it's close to multiple underground stops and bus lines. We had no issue getting to all the sites we wanted to see and Notting Hill/Kensington Park are just adorable. The unit was nice and clean. A bit tight on space if you're hoping to have more than 2 people stay. Also they charge an extra fee if you need bedding for the pullout couch.
The only thing we wish was different was the app used for keys into the building and our flat. It sounded so easy in theory but the wifi connection in the building didn't always work. There were many networks and passwords and twice we were locked out of our unit for 15-20 minutes trying to connect to wifi to open the doors. We only used wifi on the trip to avoid paying for data so fyi to any others thinking of staying here in the same boat.
Overall 4/5