Kopi on Bisma is a cosy little café on Jalan Bisma in Ubud. It is located next door to Uma Pizza. We were just after a coffee, and that seems like what most of its business would be. The staff were friendly and polite, and there was no problem explaining that I wanted the coffee to take away. They even provided a nice carry bag.
They had a good range of espresso coffee on the menu, plus desserts including the quality Gaya gelato. There is a villa (Villa on Bisma) behind the café. Our two café lattes were just 25.000 rp each (about $2.50).