It's all in the details...
Woven with chunky, nubby yarn - which means it's got to be woven slower and with care (someone hovering around the loom). Also means it's harder to sew - most likely there's a bit of knitted scrim attached to the back of the fabric to anchor it a bit - ?
Knit tunic and scarf with colored yarns/leather/whatever added in post production - by hand.
Now for what Bottega Veneta is famous for - the bags. Total and complete luxury, no logos needed.
Images via Style.com