When I read the posts by Mr. Don and Mr. Ribic, my conscience compels me to give my opinion on this.
I visit Nanos several times a year. I've always been satisfied with the hut service and staff, both previous and current tenants. Without these media polemics, I wouldn't even know the staff changed.
On a beautiful warm October Sunday, Nanos was full of people. I also waited long for tea and cottage cheese struklji, but not because of incompetent or lazy staff, but because of the crowd wanting quick service. While waiting at the counter, an older hiker asked for the toilet key. The lady at the counter said it's currently occupied and she can use the staff toilet, which seemed a very nice gesture to me.
What the above "mountaineers" write goes beyond all bounds of mountaineering etiquette. Some imagine mountain huts as super hotels with WiFi and similar civilization stuff. We must realize and be satisfied that the hut offers shelter and basic service within its possibilities. I don't know if the "old mountaineer" lady realizes that by doing her business with luxurious water flush, she'd prevent the caretaker from making tea for other hikers because water would run out. From an experienced hiker I'd expect knowledge of mountain conditions, no running water, only limited rainwater. So she'd do her business somewhere on the trail in nature. She claims the previous caretaker didn't allow that. Madam, it's not about the caretaker but water, and if God hadn't sent rain to the previous one and the cistern was empty, she'd do the same. To better imagine the staff's dilemma when water runs out in the hut, close your home water supply for a few days and use the toilet, and you'll easily faint, as you wrote.
Everything I wrote applies to Mr. Ribic too, as he just echoes Don.
Probably this gentleman doesn't know conditions in huts in the Triglav range when he writes how needs are decently met there. If he were there on hot August weekends when huts are packed, he'd probably hold his nose. He'd probably blame the caretakers for bad smells, not himself and visitors.
The gentleman even suggests closing the hut due to bad conditions. I suggest he doesn't visit the hut, but for all others it should stay open.