Shoulda just posted this link earlier ...
Diving Indonesia with Wallacea Liveaboard : Togian Islands & Banggai - after Manado, Bunaken and Lembeh Strait
Like I said, no frills! No AC (cabins are all on deck with ventilation), and he "might" have hot water installed and operating by October. They do no advertising in the US, and most divers are European. I couldn't find any trip reports online, at least no one who put a report on an English website. So he gave me a couple names of USA passengers, who I emailed, and got good reports back.
The website talks about trips to the Togians and Banggai, but he had so much trouble with reliable flights there that right now he's only doing the itineraries shown on the "Cruise Schedule" page.
If you scroll to the bottom of the home page, there's a link to a video about the operation. About 36 dives (+/-) if weather and everything else cooperates. There are three of us aboard the Oct 19 trip.