Went one step too far with my first answer (SPA) then backed off to BADEN BADEN. Needed the third nudge to find all five echoes, Once I saw DUNGEON, it was just a matter of finding the other four. (Had to google CHOW CHOW). Also had to google BADEN BADEN to determine if it was an appropriate echo that would fit the prompt. [BADEN reminded me of Lord Baden-Powell, founder of the Boy Scouts, and, in turn, camping trips. Not quite sure if they would qualify as relaxing places, though.]
Clever idea for a mechanism.