They own a secluded mountain retreat in Colorado for weekend getaways.

retreat 是名词，源自拉丁语 retrahere（"向后拉"），本义与"退却、退避"相关，引申为"僻静的休养地、隐居处"，指可以让人暂时远离喧嚣、放松独处的安静场所。