Reviews by Yeti:
I have been going to C1 since they opened years ago and use to buy all my coffee beans there too. However I recently had such appalling service I'm never going back. I was served less than luke warm coffee. When I asked for a hot one please I was told that "this is how we make it" - ie we make cold coffee drink up and shut. On the odd occassion I have had cold coffee elsewhere it has always been replaced without any problem and certainly without the attitude of "hey we're C1 and our coffee is perfect every time". Even McDonalds dont' make that claim!! I see from the comments below I'm not the only one to have this experience. And as you say there are loads of good cafes with far nicer staff - the service has always been a bit awful.
Pictures from Yeti: