If you’re traveling to London I would definitely recommend staying at Anita’s place. She is a welcoming host who will help you should you encounter any problems. The bathroom is almost always unoccupied and the house has all necessities.
The closest underground station is Brent Cross. It is roughly a 20 minute walk away or you can take the bus to get there. But this means you will have to time your departure to ensure you don’t have to wait at the bus station. But unfortunately, sometimes busses randomly fall out due to which you will have been waiting for nothing. However, personally I did not find the walk to the station bothersome so I recommend you do that.
If I had to name a drawback of Anita’s house I would say not all parts are equally clean. But, as you’re staying in London, I don’t think you’ll spend a lot of time inside the house anyways.