I had seen an advertisement and had read so much about it, so I decided to go there and form my own opinion. The positive reviews proved to be right.
There is a fixed menu which costs 10 euros. Everything I tasted was delicious. The prices are affordable for what this bar - restaurant offers. Coq Au Zen has got a special decoration and a warm environment. This place makes you feel like you were in another country. The service is friendly, too. The only disadvantage is that the chairs aren't comfortable at all.
It's a good choice if you want to try something different. I absolutely recommend it for couples, but not for a big company of friends because the tables are a bit small.