Made less of a mess
Else clues• Cleaned (up)
• Cleaned a bit, with 'up'
• Fixed (up)
• Made less messy
• Made neat
• Neatened
• Neatened (up)
• Neatened, with up
• Picked up
• Prepared for a visit by the in-laws
• Prepared for an in-law visit, perhaps
• Prepared for company
• Put in order
• Spruced (up)
• Straightened
• Straightened (up)
• Straightened up, as a room