Perfect location, you can get to the central train station, walk a few and get on the C4 bus, which would drop you off at the steps of this gem place.
Highly recommended and super quiet; I overslept on the day as it’s super quiet!
One thing, you have to go up 27 steps, so if you have language and are not able to maneuver, it’ll be challenging.
I’m a smaller guy and didn’t have a problem using the bathroom, but if you are big, the restroom will not be much comfortable to use (it will be super quick as you want to get out of there-see images for clarification).