The four sub-topics converge on a single answer: sleep on the Troisgros estate, anchor the day on the close-in medieval pair, and treat Sunday morning as a single binary choice. The friction points sit between the children, not inside them.
The “walk home from a 3-star dinner” problem is real and binding. Both lodging children land on Le Bois Dormant, the 15-room Relais & Châteaux on the same 17-hectare estate as the restaurant, from €300/night [1]. The sibling option is Le Pré Cheval, Marion Troisgros’s three farm gîtes at €220–320 — same estate, half the price, self-service [2]. Outside the estate, Troisgros itself lists only two partner taxis (Dufourt 06 09 37 17 65; Christian 06 09 43 36 62) and tells guests to book the return with the reservation [3] — rural roads have no sidewalks for the 0.7–1 km walk. The only non-Troisgros bed with a built-in answer is Château d’Origny, whose free return shuttle is the differentiator, not the suites [4].
Lodging villages double as the activity map. Three Ouches addresses each carry a Michelin star (Troisgros, plus Château d’Origny since 2023 under chef Julien Laval [4]), and the day-trip survey adds Château de Boisy in adjacent Pouilly-les-Nonains — Jacques Cœur’s 1447 manor, access by appointment only [5]. Villerest hosts both Château de Champlong and the Belvédère + Sunday boat departure [6]; Cordelle (Domaine des Grands Cèdres) sits on the line to the boat’s destination, Château de la Roche on its 437 m pinnacle [7]. Pradines (Cabanes du Grand Nord) is the one lodging-side village with no daytime hook of its own.
Sunday closures decide the itinerary. Côte Roannaise’s two flagship cellars — Sérol and Pothiers — are closed Sundays [8][9], so wine moves to Saturday morning or off the trip. Charlieu’s market is Wed/Sat only [10]. Halles Diderot is open Sunday 8:00–noon (Mons cheese 9:00–12:00) [11] — the one safe Sunday market. The 09:00 Villerest → Château de la Roche cruise runs Wednesdays and Sundays only and demands a phone reservation [6].
The tech angle is a desert. No full-format IT conference happens on a weekend within 30 km in 2026; the Fête de la Science Village des Sciences in Roanne, 2-12 October 2026, is the only weekend-aligned public tech event, and the next real conference is SIDO Lyon (~85 km, September) [12][13]. If a conference is the reason to align the trip, anchor on those dates first.
What was not researched. The brief flagged dinner mechanics as the constraint feeding every sub-topic — tasting-menu vs à-la-carte pricing, wine-pairing cost, meal length as the Saturday time anchor, dress code, reservation lead time, and whether the table books with a room. No sub-topic was dedicated to it. Before booking the trip, confirm those directly with the restaurant (reservations: see troisgros.fr/en/access); they decide whether Le Bois Dormant’s room-and-table package is a real discount or just a logistical convenience [3].