Namechanged cos I don't want to out myself...
We stayed in a youth hostel recently - I wouldn't stay in a dorm there any more because of them changing to self ID/"gender"-based rather than sex, but DH had booked a family room so I thought it would be OK.
What I didn't know until we arrived was that this hostel had recently had its toilet and shower blocks redone and they were now fully mixed sex. So, shower cubicles that were fully closed off (floor to ceiling walls) but opened out into the mixed shower/toilet block, and toilet cubicles that I think were also pretty much floor to ceiling, but with the sinks in the shared area. I wasn't very comfortable with it, and nor was DH after he was embarrassed seeing a few young women wandering around in towels, but thought I'd have to live with it for the weekend.
Unfortunately on the Saturday night, there was a group of men drinking and getting a bit obnoxious in the bar area. I was up reading till fairly late, then went to get ready for bed and was brushing my teeth in the toilet block near our room, when a big bloke in underpants suddenly came in, staggering a bit and obviously been drinking - closely followed by two of his mates, also much bigger than me and also just wearing underpants. I think one of them muttered "sorry mate" or something, and then the first one went in a cubicle and started throwing up noisily and at length. Meanwhile I was feeling very uncomfortable as I was half blocked in by these big nearly-naked guys between me and the doorway. I finished brushing my teeth and left as fast as I could and went to the toilets right down the other end of the corridor instead as I didn't want to use those ones while they were there. Then went to bed but was worrying about what to do if the DCs wanted the toilet in the night - they are at that age where they want to be allowed to go alone, but no way I wanted DD especially to go alone and find drunk men in pants there.
Later on I had to get up for a wee myself, and decided to go for the nearer toilets as the drunk blokes would surely be in bed by then, only to find the whole floor by the sinks etc covered in liquid, so I didn't hang around to find out what it was but ended up trekking to the further away ones again.... All in all it wasn't a pleasant experience, and definitely not suitable for a hostel which seems to attract a lot of families. I've been meaning to leave feedback/complain, and you have just reminded me, so thanks for that!