My wife and I spent 1 week at Marsha's flat after just moving to London from NYC. We chose it primarily because it looked nice and for its location, since it's in an area we were hoping to move to permanently. It turns out the flat IS super well located, 5 minutes from the Finchley road station, and 2 minutes from Finchley road high street with supermarkets (Sainsburys and Waitrose), restaurants, and the O2 shopping centre.

The flat itself is a on the 2nd floor and while on the smaller/cozy side, has everything you'd need for a few nights or even 1 week. The living room area has a sofa, chair, a diinng table, and a TV, gets good light, and is quiet. The bedroom has a nice bed, the kitchen has good space for prep and cooking, but just FYI the fridge is small. The bathroom is ok as well, but the hand-held shower handle can sometimes get unattached from the hose it's connected to (easily fixed, but a little annoying while you're showering).

Marsha uses an airbnb management company called Hostmaker to check you in/out, which works flawlessly. They're responsive and helpful, and Marsha has a binder with flat-information waiting for you.

We'd definitely recommend staying at Marsha's well located flat for your next London visit!