In Valinor, Gandalf was known as Olórin. As recounted in the “Valaquenta” in The Silmarillion, he was one of the Maiar of Valinor, specifically, of the people of the Vala Manwë; and was said to be the wisest of the Maiar. He lived in the gardens of Irmo under the tutelage of Nienna, the patron of mercy ( Sources : Gandalf The Grey )

Gandalf’s room was the Fourth built at House of Hobbit, It will be the Precious room because in the house there are a living room and the Holy temple room that use to for the owner private family temple.