The Sekumpul Waterfalls were North of Ubud. It was quite a trek down to see them, If you have heart problems or mobility problems, take your time going down and be careful, when we went it was raining and it was quite slippery, we did not make it over the rocks as they were too slimy and slippery. The falls were beautiful.
Below are Directions how to get there by car, I can also recommend a very good driver, Awan he was our driver the whole time we were in Bali, his knowledge of Bali was excellent, he also spoke excellent english
Awan his email is below
Drive from Jl. Raya Sangeh, Jl. Abimanyu, Jl. Raya Denpasar, Jl. Perean Tengah, … and Jl. Raya Bedugul – Singaraja to Pegayaman