The teams move onto the guest bedrooms, needing to transform two full spaces that must feel unique yet cohesive with the rest of their Lake House; these rooms must suit any type of guest, and maybe even outshine the primary! But as a blast from the past shakes up the challenge, the teams must get creative to adapt and impress; riding the highs of recent wins and reeling from tough losses, teams take bigger risks, and dig deep as time, energy and patience run thin in the final weeks.