@Mark-And-Chez0 There is no hard and fast rule with longer term stays. What’s important is what you want and what your guest need.
In my apartment I currently have a 50 night stay and have had similar stays previously.
I communicated with the guests ahead of time with notes about garbage and recycling and what to do with them. I’ve left them a couple of weeks worth of towels (with moderate usage) and two spare sets of sheets. I’ve left them with a laundry basket and large laundry bag. The instructions I have given them is to let me know when they get to their last set of sheets and /or near end of towels. Put everything in the laundry bag and let me know. I pick it up, wash and return. The next day. They have the basket and laundry bag if they wish to do their own laundry at the laundromat near by.
I have a return long term guest in another apartment who goes home every three weeks and I’ve arranged to clean his apartment on the weekends he is away including changing the bedding and towels. He pays me $25 cash for this. This is his preference, an older man.
I have film execs booked to stay in my Executive apartment and hopefully film crew in the other apartments over the summer. In their lease agreements it will be agreed that I will clean for an hour every two weeks which includes changing the sheets and towels and cleaning bathroom
and kitchen. I insist on this because it’s several months and I have had poor experiences where the guests never change the sheets which have to be thrown out, garbage build up, the toilets are black, and other nasty things.
Regular cleaning keeps them honest and you don’t have many surprises in the end.
You have to make a judgment call sometimes.
What works for you and them is best. Hope the examples help.