Oh weird, I posted a reply to Linn's message, and it didn't come up!
It's a short wool pile (about 1cm), hessian backed, and the colour is actually a little more muted, more of a russet red. I was thinking 30s as the oaky-leafy motif was popular in that era in interiors and surface design, as well as the colourway- I've seen a few aspirational interiors mags/books from that time featuring a similar colour palette.
It's certainly not modern, and doesn't have the feel of a later 60s-70s piece, I remember my Grandad's house was decked out from that period and I spent a lot of time with my lego on the floor! ;)
Thanks for your replies,
Ava