OSA

About OSA

OSA occupies a small chalet on the banks of the Manzanares river, a 10-to-15-minute drive west of central Madrid in the Moncloa-Aravaca district. The location is deliberate in feel if inconvenient in logistics: the chalet format gives chefs Jorge Muñoz and Sara Peral a series of small inter-connecting dining rooms rather than a single open floor, and a wine cellar and chillout lounge upstairs that become part of the meal's rhythm. As you move through the space, the kitchen stays visible from the entrance , an open setup that means the faint scent of smoking and maturing techniques reaches you before any dish does. For a special occasion, that physical journey through the building is part of what you are paying for.

The format is tasting menu only, with a choice between a long and a short option. Both are built around seasonal ingredients, and a notable feature of the service is that the raw ingredients are brought to the table with explanations of provenance and preparation , a practical transparency that doubles as theatre for a celebration dinner or a client meal where you want the conversation to have something to anchor on. The cooking draws on Muñoz and Peral's time at Mugaritz, which means technical discipline applied to Spanish produce: dishes like red mullet amasake, saltwater eel, pigeon dokuganryu, and homemade stuffed pig's trotter reflect a kitchen that uses fermentation, smoking, and precision temperature work rather than dramatic plating for its own sake. The Google rating of 4.6 from 155 reviews is consistent with a room that performs reliably rather than a room that occasionally dazzles and occasionally disappoints.

Lunch vs. Dinner: Which Is Worth It?

This is the decision that matters most for repeat visitors and for anyone planning around schedule. The seating times are nearly identical in structure , a single slot per service, roughly 45 minutes of reservation window, tasting menu format throughout. Lunch runs Tuesday to Friday at 1:45 pm; dinner runs Monday to Friday at 8:45 pm, with Saturday and Sunday closed entirely.

For a special-occasion dinner, the evening service is the cleaner choice. The upstairs wine cellar and chillout lounge work better as a post-meal extension in the evening, and the riverside chalet setting reads differently after dark. If you are travelling for business or marking a milestone, dinner gives the meal more room to breathe socially even if the kitchen format is the same.

Lunch has a practical case: it is slightly easier to book, and for visitors combining a Madrid food trip with other reservations, it frees the evening. The food is identical in quality and format. The value calculation does not shift dramatically between the two seatings, so the choice is largely logistical. What lunch does not offer is the atmospheric advantage of the evening setting , and at €€€€ pricing, atmosphere is part of what you are paying for.

Saturday and Sunday closures are worth flagging clearly. If you are planning a weekend visit to Madrid and assuming OSA fits into it, adjust your itinerary. The restaurant operates a five-day week and a single-seating model that does not accommodate last-minute rescheduling.

Booking OSA

Booking is hard. A Michelin star combined with a small chalet format, a single tasting-menu offering, and a ranking of #33 in Opinionated About Dining's European list means demand consistently outpaces availability. Plan a minimum of four to six weeks ahead for weekday dinner; lunch seats tend to open slightly closer in but should not be left to less than two to three weeks out. There is no walk-in culture here , the single-seating structure makes impromptu visits effectively impossible. The address is C. de la Ribera del Manzanares, 123, Moncloa-Aravaca, 28008 Madrid. Factor in transport time if you are coming from the city centre; a taxi or rideshare is the practical option given the riverside location.

Who Should Book OSA?

OSA works leading for diners who want a technically serious tasting menu in a setting that feels genuinely removed from the central Madrid restaurant circuit. If you are celebrating something and want a room with distinct physical character, the chalet format delivers that better than most of Madrid's hotel-based fine dining. If you are already planning a broader Spanish food trip that includes Arzak in San Sebastián, Azurmendi in Larrabetzu, or El Celler de Can Roca in Girona, OSA sits comfortably in that tier of intent. It is also worth cross-referencing with Aponiente in El Puerto de Santa María, Martin Berasategui in Lasarte-Oria, and Cocina Hermanos Torres in Barcelona if you are building an itinerary around Spain's Michelin tier. Closer to home, DSTAgE is a reasonable Madrid alternative if the Manzanares location is too far out, and Enoteca Paco Pérez in Barcelona and Venta Moncalvillo in Daroca de Rioja offer comparable ambition in different contexts. For more options, see our full Madrid restaurants guide, Madrid hotels guide, Madrid bars guide, Madrid wineries guide, and Madrid experiences guide.