Yes, it fylfills it's specifications both if used on 12,or 230 V. In my opinion it's quite silent and doesn't disturb the sleep. This of course is an individual thing.

Thank you for the information

The lowest temperature we used was +2 and it kept it perfectly with 220 and 12 (car) V.
Sleeping in the same room did not work for us. We usually placed it in the bathroom.