>>995747I googled portugal soil and it says it's rocky, sandy, and acidic. Here's a world wide climate map; sounds like you get pretty warm weather and no crazy amount of rain.
Your neighbor may be a good hand of advice (especially about watering), but keep in mind NO soil is perfect without adding some sort of fertilizer. Ask him what he adds to his plants as they grow. Free-range chickens are fertilizer machines, and peas/peanuts/beans add nitrogen to the soil, so keep in mind someone who "doesn't add anything" could be getting help from others.