The place is so much more than books and coffee, though of course you can chill here with a mug of something hot and read or buy any book from the shelves, but first of all it's an art-club with various workshops, exhibitions, concerts and any other artistic meet-up opportunity cherished by locals. They also serve food, but it's nothing special.
It can be recommended as a breakfast option or one of alternative concert spots, though do check the playbill first. They also organize board games nights (you can ask for games free of charge, while there during the day) and some art markets. Entrance to the evening/night events would cost 6-12€.
Prices at the website are not quite correct, but the place is not expensive anyways. Till 12.00 there is a special price for waffles