Péniche Cancale

Very nice alternative and "artistic" boat next to a river where you can have some drinks (beer) & even get a meal from a daily menu. Here are coming a lot of great DJ's and bands for having small concerts (sometimes even 4 free). It is an ideal place for a calm and also rough evening. The location has nice bartenders and a nice industrial style (bright wood & black walls). 

They have Happy Hour on Thursday & Friday from 18:00-20:00: All 0.5 L Beer for the half price.

You can get there by Tram 2, stop "1er Mai".