This makes me happy every time i see it: a restaurant/café with LCHF on the menu!
I think they should have gotten rid of the carbs and changed some of the GI meals (low glycemic index) to be all LCHF. Even though GI is better than most diets today, it feels a little bit "outdated" to me (can food be that!?).
For a good LCHF "certified" restaurant in Stockholm, check this one out: www.restaurangvag.se