User Reservation Book Sierra Vega is very simple. Our online reservation form, located in the sidebar, will accompany you wherever you go on this website. Whenever you want to check availability for a date, you can choose both the day of check-in and check-out and click on Search. Once this is done the website will take you to our secure servers for you to complete the reservation, picking room, regime and other extras. For any questions we will be happy to assist in the Phone Booking: +34 680 144 554, or the hotel phone: +34 967 584 112 and email: [email protected] or our contact form.