Q. If guest visit during the Nine Days as is common since it is vacation time, can one change the linen of the bed for them with clean washed sheets?
A. Remah (O.H. 551: 3) rules that we follow the opinion that washing and wearing clean washed clothing is prohibited during the Nine Days.
However, Minchas Yitzchok (10: 44) maintains that hotels can change the linen of the beds for new customers. He recommends to leave the fresh linen for about one hour on the floor and also not to request fresh sheets during one’s stay at those days. (See Piskei Teshuvos 551: 16).
The same can be followed for guest visiting then.
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit’a.