One rug idea:

https://www.roomvo.com/share/0463qm

See how big and generous the rug in your inspiration pic is. Since the rug and sofa will go with you to future homes, they should work well together color wise. Be sure the rug is 2 feet or more wider than the sofa and that there is room for it to slip under the front 1/3 - 1/2 of the sofa. What size is the new living area?

It’s approx 13’ x 16’. I was thinking 8x10 rug?

Move the sofa into the space and tape that size rug out on the floor with the tape under at least the front 1/3 of the sofa. That will tell the tale before you spend $$. What is the length of the sofa?