Stopped off on the way past with a friend a few weeks ago, was quite a good atmosphere and although there was loads of people it was still nice and friendly.
I had a cubre-libre cocktail, it didn't exactly blow my mind but the bar lady did put a healthy amount of lime in (which is how it should be made!)
There were some DJs playing downstairs (called noise ban?) in what essentially looked like someone's living room. Although I wasn't that sure at first the "at a house party" feel did work in the end and we ended up staying till close.
I don't know what its like in the week, but If your in the area (or walking past like I was) I'd say its defiantly worth popping to have a look...
Cocomo serves beers, wines, spirits and cocktails as well as a selection of bar snacks and sandwiches. There's a DJ playing a host of Soul, Funk, Jazz and House tunes from Wednesday to Saturday. Catering for private parties of up to 40 guests is available upon request.