First if all, it's not *that* hard to find. Go in the main entrance to Christiania, it's in the big set of brick buildings on the left. Look for the giant sign that marks where the restaurant is (see my picture; it's past Cafe Loppen, don't get confused), the entrance is to the right of the sign, where a smaller sign points you up a couple of flights of stairs.
It is also not as fancy as the website suggests. It's a paper-napkin and paper-placement kind of place, not cloth. I worried that wearing a t-shirt I would be underdressed, despite being inside Christiania. I need not have worried; it's casual. We called in a reservation but there were always open tables the entire time we were there (a Wednesday in early August).
The service was exceptional. When we went, there was one table of 47 people (we asked) down the center of the space, all university-age, and then a few other tables of three or four, like us. When I saw that, I worried that the wait staff and the kitchen would be a bit overwhelmed and food/service would be slow. Right after we ordered we watched two or three servers bring entrees to all forty-seven people within about five minutes, one of the more impressive feats of restauranteuring I have ever seen. A fair number of restaurants don't even seem to be able to serve entrees at the same time to a table of three or four. Adding to the exceptional-ness was the fact that our waitress (didn't catch her name, but a redhead), while simultaneously helping with service at the big table, waited on our table like we were the only table there. Attentive, relaxed, super-friendly and cheerful, but not interfering or hovering. I told her that I was impressed how quickly they got the big table's food out, she said, "Well, it's only forty seven. Not that difficult, really." If you have a big group for dinner, this is your place!
It was above-average loudness, requiring raised voices to hear each other. If you're looking for a quiet place, this probably is not it. The large party made it worse, but it seems like large parties might be common; there is little to absorb sound and the windows are closed due to the building design.
It's good for children. We brought our six-month old with a small play-mat and set her on the floor. No one minded. An advantage of being loud is that no one notices if your child is making noise.
The menu was very good with some unusual things you might not get elsewhere: we had three people, who ordered, cockerel, venison, and the vegetarian quiche respectively. Food preparation was solid but not stunning: no one was unhappy, but no one was blown away. Venison was a bit gamy, but then that's venison. Cockerel was like chicken but a bit more tender. Veggie quiche was respectable. Portions larger than average but not gigantic. Each plate had delicious sides. read more