locate it far enough from guestroom; usually on the basement floor.
Better be located in an area with an outside wall, since dryers and other equipment need to be vented to the outside.
Are utilities and drains readily available at the proposed location?
Find the extra space as close as possible to the existing laundry if the expansion of laundry area is needed.
Laundry room’s walls – durable and moisture-resistant, ceilings - moisture-resistant and sound absorbent, cement floor – easily cleanable floor drains and no low spots where water can pool.