Hello! Welcome to OpenStreetMap!

Please use the English names of the days in the opening_hours tag.

For your other edit: cafés in a building should be added as a separate node, not as tags on a building. In gnome-maps you can do that by using "add to Openstreetmap" button, not editing an existing building.

I fixed these problems here: https://www.openstreetmap.org/changeset/136249423

Thanks for your additions, and happy mapping!