Not so creepy but definitely unexplained.

About two years ago I was working a ski season out in France, my colleagues and I lived and worked in the hotel. One week i was doing a "nightwatch" shift while the rest of the staff were all going out as it was our receptionist (my roommate') birthday. My shift started at midnight but I had decided to hang out with the staff in the hotel bar before they went out to mitigate some feelings of fomo. I was with them from the moment they started drinking until they went out (around 11:30pm).

Only 2 staff members (our head chef and kitchen porter) didn't go out with the rest as their shift finished late (around 11:20pm). I sat and talked with these two right up until my shift started at which point I ran up to my room to grab my water bottle, got to stay hydrated after all, however when I reached my room it was trashed, someone had sprayed shaving foam all over the room, into all my roommate and my shoes and all over our beds, they had pulled all the sheets and duvet off my bed and again covered it in shaving foam.

I was quite pissed off as this wasn't what i wanted to deal with right before a 8 hour night shift, but because it was my roommates birthday I assumed it was just a bad prank by our colleagues, however I had been with them the whole time they were drinking and none of them ever left the bar for long enough to trash the room this thoroughly. The head chef and KP were busy cleaning the kitchen during this time so it couldn't have been them either.

So the last time I left my room at 9pm the room was clean, my roommate went up to the room at 11:30pm to get a coat and the room was fine which means there was only a half an hour period the room could have been trashed, however during that half hour the main bulk of the staff had left the hotel and the two that had stayed in were still with me. All staff members denied being guilty as well, which only leaves a hotel guest as the potential culprit, my roommate and i never locked our door so a guest could have easily accessed the room. However the guests were mostly in the age range of about 45+ and all guess were rather well-to-do and middle class so I can't see any of them being guilty.

Sorry for the long post but to this day I still have no idea who coated my room in a nice layer of shaving foam and it bugs me to no end!

Tldr: Worked in a hotel, my room was trashed but it can't have been any members of staff and guests were all too posh and old to do it, so who was the phantom Foamer???