Hi, Susana,
I think maybe my blog is giving you the wrong impression! I had a great time on this route. I walked alone and was never scared. It is true that I was alone in some albergues, but nearly all of them are right in town, have locks on the door, and are completely safe. I don't think I ever wrote anything about feeling uncomfortable or scared -- a little lonely at times, perhaps.
The albergue you're referring to about walking several kms out of town is the albergue in Manzanares el Real. It is on top of a big rock out of town, but not in any sense in the wilderness. In fact it is about 100 m from a single family residential area at the bottom of this rock. The bit about the "priest liking you" was something that I had read online or heard from others, but never experienced a problem. When the municipal police saw our clothes hanging on the line, they made the trek up to check in on us and make sure everything was ok. It was one of the highlights of the trip, staying in this albergue with the Guadarrama cirque all around us as the sun went down.
If I had not met the two Spanish pilgrims in Manzanares, I probably would have gone to a hotel (there is one a stone's throw from the magnificent castle), simply because I would have given up trying to contact the priest, who typically doesn't show up back in town till around 3 pm. We had several hours to kill, and were able to visit the castle, do our grocery shopping (the store in town doesn't close over lunch-time) and eat a big lunch in a restaurant in the plaza. That meant we didn't worry about cooking a big dinner.
I promise you won't be screaming in the wilderness on this route, in fact, you are never in the wilderness except perhaps for the day from Cercedilla to Segovia when you climb up to the Fuenfria pass in the Guadarramas. So I would just like to reassure everyone that this is an extremely well-marked route with great pilgrim infrastructure and very safe. Buen camino, Laurie