This article asserts the fourth amendment applies to hotels. The ruling the article cites is about police entering a hotel room, not about private security hire

This article asserts the fourth amendment applies to hotels. The ruling the article cites is about police entering a hotel room, not about private security hired by the hotel entering the room. I'm not a lawyer, but I wouldn't recommend relying on 4th amendment protections in a hotel. Pretty much have to treat a hotel room as compromised space, especially if you're not in the room.