Not far from monastery you can find via ferrata 'La Teresina'. I would vote for that as absolutely the best ferrata on Montserat massive. It starts with an approach from refugio Bartomeu Puiggr£s (it closed few years ago, but still known as refugio). You can either drive there or walk from monastery. It's 1 - 2 hours walk.
Approach to the start is in dry canyon and takes about half an hour. It's marked with paint all the way. There is a board at the start of ferrata indicating the name and rules on route.
Via ferrata itself is graded as difficult. First part of the route is very exposed. Traverses the wall and at some point there may be nothing under you for few hundred meters.
After you reach first summit you will have a nice view and will have to down climb on other side for about 12 meters. Personally I find this part to be most difficult of all route and would suggest to take abseil cord if not comfortable going gown on vertical rock.
After the down climb it's easy traverse on the ledge for about 1km. Most of the parts are not protected here and there's a lot of vegetation.
Last part of route is in narrow ravine. I felt like in chimney there! It's rather easy, bridging is the key. It's about 50 meters climb and brings you to Mirador (Sant Jeroni) summit. It has a viewing platform and crowded on a good day. So hero welcome is guaranteed after climbing over the railings!
That's the end of the route. Route was reequiped earlier this year btw. Now it's in a very good standard in terms of pro.
GPX of route and some pics can be found here:
http://www.wikiloc.com/wikiloc/view.do?id=4609311Post edited at 11:37