We went to this museum as an afterthought because the Creole Museum was closed. What a lucky encounter it turned out to be! The best 6 Euros of our entire visit and well over two hours of interesting historical facts and information (in English too, in case your French is rough like mine) about the island, trade and production of sugar and rum. Before leaving you can taste one - or all - of about 15 rums and cocktails but there was no pressure to buy at the shop, although we purchased a very reasonably priced bottle of Reimonenq Rum produced in the distillery right next door.
One minor criticism; the sound quality of the film could be improved.
I would imagine that young children might be easily bored although there are some interesting animal statues that might keep them occupied. (I'm not sure what connection a giraffe, zebra and stag have with Guadeloupe and the ladies behind the till laughingly admitted that we would be unlikely to find any wandering around the plantation)
Finally, one indication of the quality of any visitor attraction is always the state of the toilets, and those at this museum were clean and well maintained.
We have no hesitation in saying that this museum is well worth a visit.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.