I live just around the corner of Weser Vegetan and go there quite often (as many people who live in this area). The food is the best in it's category (vegetarian turkish food) in Berlin in my opinion.
The "Wunschteller" which means you can combine 6 different Antipasti and hot dishes like hallumi or sigara börek is incredible. The place is run by a family and they are very helpful and kind.
The place is clean and outside it's nice to sit in summer as all Weserstraße is full of interesting creative people, bars and shops.
Updated from previous review on Wednesday November 13, 2013