We stayed with Ari's family for 2 days. Everyone was very welcoming. Ari's wife cooked delicious meals for us, which we could even join to prepare. We had a walk around the village and got explained how they grow and harvest rice. We felt very comfortable living with the family and within the village community.
One night we did the Ijen trekking tour with Ari's son. Ari and his son both work as miners at Ijen and thus know the vulcano very well. He explained us everything and looked out for us, so no one was left behind in the dark. Watching the blue fire and the sunrise was impressive. All in all the tour was very well organized and totally worth it!
I highly recommend staying with Ijen adventure Inn at the Licin village. Living with the miner families is a very authentic experience. The tours to Ijen are well organized and the miners know the vulcano very well.