In my experience in Barca (merely from vacationing there a lot) is that they have a subculture of pickpockets and scams. I've heard of stories where con artists dress up as fake/undercover policeman to cheat people out of their passports/wallets/money, distracting drivers in cars while looting the trunk, pickpockets that slit your pockets/purse...
I love the city, don't get me wrong, but I wouldn't be surprised if people working at the hotel was in on it. I'd be even more surprised if the police actually did anything to help just because they're pretty goddamn lazy over there in terms of actually doing ANYTHING.
IMO, make a big fuss, rebuy all equipment, and maybe complain enough that PS never sets an event there b/c of how shady this entire situation is.
either way GL and hope everything turns out ok