We stayed at Gerda’s for 5 nights with 5 people. Overall it was a very fine stay. Close to busses and a tube station coming and going from the center of London was easy! The house is clean, although I would say it’s a “no frills” kind of place :) it has everything you need and Gerda was helpful and communicative through our stay.
There is some noise from a nearby train station, but it doesn’t run all night.
The only other thing to note is that there is no comfortable seating in the living room for many people. This wasn’t an issue for us as we mostly just slept there, but I could see it being a downside for others. Thanks Gerda for the nice stay!