Playroom rhymes with:
backroom, ballroom, barroom, bathroom, bedroom, boardroom, bridegroom, classroom, cloakroom, courtroom, darkroom, elbowroom, headroom, livingroom, lunchroom, mailroom, newsroom, restroom, schoolroom, stockroom, storeroom, sunroom, toolroom, washroom, workroom
Playroom sounds like:
palermo, pelerin, pellerin, philharmonia