Hi buttercupbetty,
I don’t have any personal experience with them although a set of linen sheets are still on my wish list.
There have been some discussions on the forum about them though and a forum search on rough linen will bring them up (although it will also bring up some posts with just the words or partial words “rough” and “linen” that aren’t about Rough Linen).
Phoenix
PS: Thanks for including the link to The Sweet Home article about linen sheets, I hadn’t seen it. There is a link to their article about cotton sheets in the reference post for sheets here and I’ve added a link to their article about linen sheets as well.