Café well located opposite the station. As indicated in the often very funny comments, the toilets are indeed reserved for customers. On the other hand, they do give water to people who ask for it even without drinking (well, your bottle will not be filled but you will have a little water!)
I learned from the comments that I had paid more for my drink because I had consumed it in the dining room and not at the counter! The waitress asked me where I was going to drink my drink but didn't warn me of the price difference 😅