All in all a good stay!
Tita and her family were very friendly and helpful. Even though there were small complications like a broken lock, they were instantly there to help us and fix the problem. The Check-In was very flexible, which we really liked because weren't certain when we would arrive. Tita told us that we could easily stay at hers with four people and that was very nice of her, but it was a bit crammed.
She also was so kind to give us access to all of her kitchen utensils.
The only " bigger" problem for us was, that everything in the kitchen was a bit sticky to the touch, even though we cleaned all of it multiple times.
All in all it was a very great stay and we'll return if we're gonna visit London again.
A big thank you from us to Tita and her family.
PS: their cat is very cute!