Gili Trawangan is the biggest of the Gili Islands. It a small flake in the sea, very close to Lombok (you can see its coast and volcanos in many of the pictures below). We got there almost immediately after getting to Bali. Several person we know or met described it as heavenly. The beaches and the view are beautiful. The pace is calm (no cars, only horse carriages and bicycle). And strangely no dogs allowed, only cats.
We did cycle around the island (7 km), tried indonesian food at different warungs, went scuba diving. Great memories.