I put regular (i.e., cheap) area rugs directly on my Coretec LVP floors almost 2 years ago. I avoided the rubber pads on purpose, and figured since the rugs are underneath heavy furniture they're certainly not going to move around. Zero issues. These are the cheap 9x11 area rugs sold at big box stores - no rubber backing like a bath mat. I could envision any rubber creating a haze or ghosting issue on the LVP, but I'm not sure any regular wool or cotton rug with no backing can do any harm. I've had no issues in over 2 years, and just pulled them both up a few weeks ago to clean crumbs from underneath the edges....

If you roll up the winter one where will you put it ? I think if you find a nice summery looking one the same size just layer them . If you really want help post a pic here and also the size you need. I have the vinyl rugs that are really inexpensive they roll up to very small when not needed I use one inside for the doggie door with a towel under it to catch the water when muddy feet come in form the dog run. The rug washes off with soap and water when it is dirty . They come in fun colors that owuld be great outside for the summer. I have a really big one in my outdoor seating area .

Order the rug you like in the smallest size...then if you like it, send back the "sample" and get the full size one. What is it that clashed about the ones you sent back? The room is very neutral in black white and cool gray, and the floor is warm tone. Maybe that's it. The mix of warm and cool tones...get a rug with those tones.

Hard to say without seeing a pic of the space. Most often one large rug — in your case very large with king bed & chest at foot — placed far enough from head of bed so that when getting out of bed your feet land on the rug - but also a bit away from the front of the nightstands.