The address is Piazza Trinita dei Monti 6, Spagna.
Lewis created is almost certainly for children today to relate into the biblical stories and learn them without even realizing that they are doing it. https://iodirectory.com/listings12861667/diyarbak%C4%B1r-escort-herkes-%C4%B0%C3%A7in-e%C4%9Flenceli-olabilir