All libraries in #Brussels are closed on holidays and most of them closed on Sunday. Exceptionally, a few open on Sunday for just a 2 hour window so you can get a book and get out.
Even more exceptional is one branch in the city that is officially closed on Sunday but you can sign up for access all day. It’s not staffed but you can badge in and surveillance cameras record everything throughout. You cannot bring friends and have a duty to prevent tail-gating through the door. But it’s good to at least have the option. Otherwise it’d be quite annoying to have no access on Sunday. Most people get Sunday off so of course it’s the most interesting day to use the library.
Anyway, it’s cool that the Swedish library in that article was respected apparently despite no surveillance (I assume). If that were a regular thing I guess there would eventually be a bad apple.