Answer
Based on official Jordanian legal texts
Lawful marital housing for a wife under Jordanian law is one of her rights against the husband. Article 73 of the Personal Status Law provides that the husband must house his wife in a residence where she is safe as to herself and her property and can attend to her religious and worldly interests. This falls within the concept of maintenance, which Article 59 describes housing as one of its items.
The aim is for the housing to be fitting, equipped with essentials, suited to the spouses' condition and the wife's standing, safe and appropriate. Article 74 addresses controls on the husband housing his family or relatives with the wife without her consent, and Article 75 on cohabiting with another wife, to protect the wife's privacy and comfort.
The wife may refuse to move to housing that is unsuitable or that lacks the conditions of lawful housing, while keeping her right to maintenance, because her refusal in that case is for a lawful reason and is not nushūz.
Assessing the adequacy of the housing and whether its lawful conditions are met remains within the Sharia Court's competence on the facts of each case.
This is a general explanation based on Jordanian Personal Status Law and does not replace advice from a qualified lawyer in a specific dispute.