A room that a person can never endure for more than an hour

(1)This room is used for sound recording
(2)The inside has a Guinness record of -9 decibels
(3)He’s so quiet that he can hear his own organs
(4)One cannot hear below the decibelYes
(5)Uniquely shaped walls absorb sound
(6)It’s so quiet inside that it causes auditory hallucinations
(7)The longest time you’ve lived inside is less than 45 minutes