Tep wireless is a portable wifi, fast and reliable.
Hubud [Hub-in-Ubud] is the first coworking space in Bali and is also renowned across the globe. They have speedy internet up to 50 mbps, and has everything a nomad needs.
Located right next to Hubud, it is a great alternative if you need only few hours of work done or don't want to pay for an entire day of the co-working space. The cafe is open, has good WiFi, really nice Pan Asian food, delicious coffee and fresh juices. A really nice environment to work!
Super cosy co-working space with nice staff and good internet. Apart from the private Skype rooms and hot desks, they also have a pool, a bar, food, fresh coconuts and a brilliant jungle view. Their coffee and events makes it my go to co-working space in Ubud. Also check out their co-living facilities if you're looking for a place to stay.