@verber It sounds in principle a good idea. And I don't want to be discouraging but speaking as someone who has worked in that field, both as a giver and recipient of the Ignatian method, the book by St Ignatius itself is not particularly user-friendly, in my opinion. If you haven't done the exercises before, I think the book is a bit baffling. (It is common to do them more than once). It is rather elliptical in what it says and doesn't say. It is aimed mainly at someone who is directing someone else to do the exercises. And that someone else has had generally a lot of training. It is not, again in my opinion, a very effective self-help guide. I would be interested to hear the views of others.
There is am immense amount of material online, and much of it is quite excellent.
You could start here, and find many links.
https://www.ignatianspirituality.com/ignatian-prayer/the-spiritual-exercises
I am not in anyway saying it is not a good idea. I think it is an excellent idea. Just cautioning that if you set out with Ignatius' book and without prior preparation, you might find it disappointing.
Classically it is a 30-day experience, but commonly and much more commonly it is done in a modified 8-day format. One thing to consider is finding somewhere you might try an 8-day retreat before you go to introduce you to the method.
You would need classically several hours a day throughout the 24 hour period of silence. One of the quieter caminos might be better than the
cafe con leche Francés
(Which I love too.) I have just walked from Canterbury to Brindisi probably >80% of the time alone both at night and by day and that is the kind of setting I like for a retreat.
For someone who is looking for a taste, the Irish Jesuits have a very popular online version which easily leads you in an Ignatian methodology.
https://www.sacredspace.ie/