The brief’s “walking distance” premise breaks on first contact: Casa Marcial sits in the hamlet of La Salgar — a “bucolic” handful of houses on one unlit country lane [1][2], 3.5 km from Arriondas station, with no second hotel cluster within easy walking distance. The closest sub-2 km bed is El Interior de Gaia at ~1.8 km on unlit rural road [3] — fine in daylight, awkward in dinner clothes after a tasting menu. The whole weekend therefore pivots on a pre-booked return taxi — the restaurant arranges one on request and Arriondas en Taxi runs 24h [4][5] — and the brief’s “no driving after dinner” constraint becomes “book the cab before you order the wine pairing.”
The lodging answer that respects both the brief’s letter and its spirit is Narbasu — the Manzano family’s own 14th-century Palacio de Rubianes in Cereceda, 20 minutes by car, with a Michelin Green Star on-site [6][7]. It is the only lodging Casa Marcial itself recommends [5]. One gotcha: Narbasu operates Thursday–Sunday only [8] — fine for a Sat-night dinner with Sun-morning checkout, broken for a Sun-night extension. Backup picks rank by what you optimise: closest serious sleep is Puebloastur (~3 km, Gran Lujo 5★, ~€480) [9]; value-in-town is Hotel Casona del Sella (1923 Indiano on the Sella, ~€100) [10].
Cross-cutting villages. Reading the two lodging sub-topics through the 30 km activity lens: Cereceda (Narbasu), Cofiño (Puebloastur), La Goleta–Piloña (Palacio de Cutre), Peruyes (Aultre Naray), and Caravia (El Babú, La Raposera) are all sleeping bases — none are day-trip destinations in their own right. The activities sub-topic confirms this: the destinations are Sella canoe launches, the Lakes of Covadonga shuttle, Tito Bustillo cave, Mirador del Fitu, and the Cangas de Onís Sunday market [11][12] — not the lodging villages.
The decisive 2026 logistics fact to plan the day around: from 1 June – 18 October 2026 private cars are banned on the CO-4 road to the Lakes of Covadonga all day; you must park at Cangas and take the €9 round-trip ALSA shuttle [13]. For the Tito Bustillo cave, tickets for 1 July onward go on sale 1 April 2026 and sell out for peak weekends [14]. For a Casa Marcial table, book months ahead and confirm the dining date before you book the hotel [15].
The honest gap. The brief asked for verified Casa Marcial dinner mechanics — tasting-menu vs à-la-carte pricing, wine-pairing cost, meal length, dress code, reservation lead time, whether a table books with a room — to feed every sub-topic. This was not researched in any child. The restaurant’s own reservation page and house page are the authoritative source; expect to confirm dinner length when you call (3–4 h is typical for two-Michelin-star tasting menus, which sets your taxi return window). Treat the dinner mechanics as the outstanding pre-trip phone call: book Casa Marcial first, ask the meal length, then size the taxi return slot and lock the hotel.
If you also wanted to bolt on a tech event: don’t. Nothing inside 30 km, and the Oviedo/Gijón options at ~60 km are weekday faculty events or monthly meetups, not a Saturday programme worth driving to after a tasting menu [16][17].