The spiders were a bit harder to find. After a while I saw some piece of debris hanging from some web, see the spot in the middle of the photo?
Zooming in, it revealed itself a a superbly camouflaged spider. It is hard to think it is a spider from a distance. Once I had spotted one, more followed, and I counted five in a relatively small area.
The nicer thing, though, was to find its spiky egg sac too.