Nusa Lembogan: a small paradisiacal island opposite Bali and really congenial, for the real Indonesia .
My suggestion
Once there, you can hire a moped or a bicycle to ride through the island. Book at least a two-night stay to have the time to enjoy this island, small though it is.
Kawah Ijen is a volcano unlike any other, located on the extreme east of the island of Java. You can see unique phenomena there which are bound to impress you.
Catch nature unawares as she wakes up...or at least that's what it feels like when you are on the wonderful 2,329 metre high Mount Bromo, on the east of the island of Java. An absolutely spectacular and unforgettable moment. If you don't appreciate nature then don't bother!
If we have loved the Island of Gods, the pearl of Indonesia, which has had such great tourist success for many years now, we can't deny that it is suffering for its fame. The environment is deteriorating year by year, mainly due to the plague of plastic which is everywhere and which the government does nothing about. Rubbish is not treated and the plastic remains.
Bali is a paradise on earth, and it's not for nothing that it's called the Island of Gods. You need to stay there for several days if you really want to appreciate everything it has to offer. This is a brief presentation of the things to see in Bali.