Anyone got a roomy 3/4 person tent I could borrow?

Hi all
I’m off to Saas Fe for a week climbing / mountaineering with 2 of my son’s on 26/7. We are planning on camping in Saas Grund but the tent I would normally take is on the small side for 3 of us to base ourselves in for a week, so I was wondering if anyone had something suitable that we might be able to borrow. Weight isn’t a factor. I’ve got the offer of a 6 person monster from a friend which weighs in at ~40kg but I’d like to see if there’s anything in between.
I promise it will be well looked after.
Cheers
Andy