I’ve never stayed there but been a couple of times to ride. Both times with guides but I think all of what we did was waymarked. Course, there’s a difference between being waymarked, and being easy to navigate, easy to find the best stuff, etc- and I think there’s more stuff that’s not on the maps too.
So being guided was still really valuable just to maximise our time. But if you’ve got a couple of days there then it’s not such a rush…
Also, try and get to Pila for a day if you can- I prefer La Thuile overall, it’s basically Superinnerleithen, but the Pila-Aosta trail is ridiculously good and it’s not that far away.