Nice restaurants in Lille?

Hi everyone,

A bit specific maybe, but we're going to Lille for the weekend and staying in a hotel near the centre.

I'm looking for a couple of nice French restaurants for Friday & Saturday night - but by nice I don't mean £150 a head.

I'm looking at something more like £20 each (we don't drink alcohol so no money spent on wine) and nothing too over the top.

I know this can be easily acheived in London, I'm not being cheap but we're on a budget and I know there are loads of decent restaurants out there that feel very nice and the food is delicious and you don't have to pay a great deal, http://www.lemercury.co.uk/ in Angel (London) being a great example.

Any help would be greatly appreciated!

Thanks :)