@Jenny because I host long term guests (minimum 28 nights), I often have quite large gaps between stays. Actually, the gaps could be anything up to 27 nights. Previously, if I had a gap of a week or more, I would open up those dates by reducing the minimum stay and applying it just to those nights using a rule set.
However, pre-COVID, I was very busy with work and travelling a lot, and also got quite a few problematic guests for these shorter stays (perhaps because I was using instant booking at the time or maybe because those bookings tended to be more last minute) so sometimes it just wasn't worth it.
Now I only open up the dates if the gap is substantial, i.e. two weeks or more, but that rarely happens as the gaps tend to be up ten days or less. So, I try to use those dates to do maintenance/make some improvements in the room if I am not too busy with work, or just treat it as a bit of a breather. Because I have three rooms listed in my house, it's usually only one room at a time that has a gap, with the other two booked. Very rarely, I have a few days with only one room booked, but I don't think they are ever all empty at the same time!
That may well change going forward as bookings have ground to a halt since the Summer Release (with the exception of repeat guests). If the calendar starts to get very, very empty, I may need to take shorter bookings, even though I'd rather not.