I cannot stress more how much I enjoyed the stay!
I could see that all she wanted was that I feel like at home and indeed, I did. It was so nice place with a backyard, where lovely Charlie and run around, and it was right in front of a bus stop, so I could get home safe (I never used tube, since I loved bus rides, but the tube station is also close, which can take you to the center of London quickly) I was able to use my own nice, clean bathroom and she kindly provided towels as well!
If I ever go back to London, I would definitely want to stay at her place again!