I would preface this by saying, "may not be for everyone". But I loved it.
I'm not sure how much in the exhibits was original artifacts vs. reconstructions--if they were originals, it's impressive. There is a video at the beginning that takes you from prehistory in Spain through now--this is only my second trip to Spain, so I wasn't aware of the very early human occupation of the Iberian peninsula, or the may influences on the Peninsula from various outside areas.
I found the exhibits well laid out. The Roman part of the museum was particularly good--surprising # of mosaics from Navarre, and a beautiful atrium layout of Roman sculptures and artifacts.
I had trouble using the museum's app--I tried to download it, but every time I tried to play a selection, it would act like I never told it to download, so I finally gave up. However, their were plenty of written explanations in both Spanish and English, so I went with that. I wouldn't bother with the app. there were no audioguides available when we were there.