I also have to load off my opinion on CHopan -- went there a couple of times, found the food alright if overpriced (all it really is is a fairly small portion of rice and a some veggies that maybe cost them EUR 2,--, at best - and they charge over 10 EUR for that!
Anyhow, what really put me off the place last time we went was the extrem unfriendliness of the staff - I mean, are they trying to make money, or are their customers just a nuisance to them?? I wanted to have a particular table -- the big one upstairs, and I had made a point of pointing that out on the phone (and they speak good German, so no excuses there!!). Had been assured that it´d be available, only to find his great-aunt + assorted family sitting at that table when we got there! They of course tried to assign some other table to us, which I quite politely declined, pointing out to them that we had expressly asked for that particular table and had been told we could indeed have it (also, it wasn´t like we would have disturbed the family members eating or anything, they were just hanging around there!). A bit of a discussion followed, and we sat down at the other table which I really didn´t enjoy, and being the German taht I am, I decided that we were the paying customers after all who maybe should be given precedence ... we did get the table in the end, but all in all it was a most unpleasant experience, and the people I as with (my American boyfriend and an American girlfriend) were no help, either...
I guess it´s safe to say that service at that restaurant is anything but particularly friendly; I now also remember another incident at that place - don´t recall all the details, but I think it was some time in the summer, it was hot and there wasn´t a lot of business or something -- we were looking to eat a bit before going to the Cinema and went by the Chopan. Door was open and all, and there was one table occupied by diners. However, when we opened the door, we were told by the owners that they were indeed closed !??!!??. When I then asked how come the door is open and how come there are other people inside, eating?? they said something like "they are regulars" or some such bullshit. That was certainly one way of making sure we would never become the latter!!!
Enough said on the Chopan -- we went to another Afghan restaurant yesterday, the
Hindukush off Rosenheimer Straße --- AND LOVED IT!!! everything was great, the people, the interior, the food, the wine -- outstanding!!! Totally to be recommended, and it´s close to both the Kunstpark (if you´re under 19), the Elserhalle (if you like shows) and the
Museum Lichtspiele (EVERYone loves movies!!)