A big PLUS for Christine.
She is such a beautiful host, sharing every comfort of her blessed house with everyone who has a good mind and wants to relax in London.
Christine's house lies in the North of London, but connections to the city are plenty, you just need to shift sometimes from bus or train to métro et vice-versa.
Mill Hill Broadway at about 500 meters from Christine is nice little center with shops, cafés and restaurants.
Not far away, near Colindale, you have other attractions like the Air Force Museum and so on.
Nice place to stay, though a little far from the London's City.