What's exciting about this is the opportunity to examine an untouched area of history. Sadly, over hundreds of years, much of the artifacts from these sites were looted. Hopefully we've learned our lessons at this point and can preserve them this round.
Although from the photos of the space, it looks to be empty, so no amazing artifacts to be discovered. I would guess that any ancient unknown artifacts that are discovered in the next century will come from undersea archaeology with all the limitations that exist for finding things that have been underwater for thousands of years.
"Their lives seem to have revolved mostly around musical concerts—not so much listening to them, as recording the audio from them like trophies to share for prestige among their peers. Mostly some kind of status-jockeying activity, as the art—such as it was, and if you've heard some of these recordings you know what I mean—seems to have been incidental. It's unclear whether anyone even listened to these recordings, but one acquainted with the material must suppose: no, not often. We speculate these concerts must have been difficult or trying to attend (again, one must agree that they were surely trying...) and so obtaining a recording of them as proof of one's attendance, and endurance of the entire trial, took on an almost hunting-trophy-like role in society.
Most of their highly-prized leisure entertainment seems to have been British and Eastern European television, plus something called 'Battletoads'."
They'll find whatever they need to find (or not find) just as we do. Its simply an impossible exercise to go back in time, carrying all of our assumptions about modern life and what we have been taught about the 'Ancient world'.