I highly recommend staying at Katie and Christian’s apartment! We stayed over Christmas and had a fabulous time! The place has easy access to buses and the Underground, with trips to the popular sights about 20 mins away. It was quiet at night, away from the city noise (though we heard and saw foxes on multiple occasions!). The hosts were very helpful with any and all questions before and during the stay (e.g., where to get required covid tests, etc). Hunter, the resident cat, was also friendly and added a very nice dimension to the stay.