Sam was a good host, responsive before and during the stay, and the location is cool - safe neighborhood, good late-night food options (especially Middle Eastern food), and close / easy to get to major underground stations (Paddington, Edgware Road).
The AirBnB was safe (secure access) and suitable for four women traveling together. I'm not sure there would truly have been room for many more - the bathrooms are small and living spaces were good for 4 people.
Most concerning was the black mold in the bathroom. When we first arrived, we called because of a sulfur water smell, but that went away during the first day (came back off and on). Someone came quickly but nothing really to be done but run water. There is little ventilation in the unit so black mold is on the ceiling / vent in one bathroom, and not something to mitigate while staying there. Sam did refund our cleaning fee, but I'm surprised we didn't see this on another review, so FYI. If solved, would stay again for sure.