Can I stay in Spain for 7 months?

Could you please clarify for me? I'm considering spending an extended period of time in Spain, specifically seven months. Is it possible for me to remain in the country for such a duration? Are there any visa requirements or residency permits that I should be aware of? Would I need to apply for a specific type of visa or permit to stay for seven months? Could you also outline any steps I should take to ensure a smooth and legal stay in Spain for this period? Thank you for your assistance in this matter.