Near the station puts every trailhead and both rail lines at your door. Up the Carretera de las Dehesas gets you into the pines themselves — a handful of hostals sit right on the valley road. Book ahead for autumn weekends, when half of Madrid comes up for the leaf turn.
Cercedilla lists around 16 bookable hotels and guesthouses, from roughly €45/night. Prices on the area page are live; booking 3–6 weeks out usually lands the best rate, with free cancellation on most rooms.
If it books out or you want to compare: Navacerrada (from €50/night), San Lorenzo de El Escorial (from €54/night), Rascafría (from €46/night) — each with its own area guide on this site.
Curated picks are coming — meanwhile, the live search covers every bookable property at the same price or better.