In reply to HeMa:
There is enough easy multipitch in Montserrat to last a lifetime, especially in the gorros sector, but also in the zona sur. Whether you would want to spend a lifetime padding up featureless and, IMO, rather boring slabs, is another matter. But certainly ticking off a pinnacle is a good experience for a day.
Make sure you read the online topos carefully - the one you linked to (which is one of the classic routes of the massif) informs us that the route is ‘desequipada’ i.e. no bolts apart from at the belays. Big deal, you might think, but protection is hard to come by and you will be running it out for literally dozens of meters. (The classic ‘Montserrat’ protection is cord tied off a round one of the bigger protruding stones of the conglomerate -the first time I saw it used, I laughed).
There are plenty of fully bolted easier multipitch, though. Descent is via abseil, as others have mentioned. So two ropes are useful, although I have done several routes on a 80m single, you just need to check that the belays are less than 40m apart.
Have fun!