The weekday lunch menu is Spain’s great social technology: three courses, bread, a drink and often coffee for €12–16, served roughly 13:30–16:00 wherever a handwritten board leans on the pavement. It exists by custom for workers, which is exactly why it is good — the clientele returns daily and complains professionally.
The rules: the blackboard beats the laminated card, the daily stew (cocido, lentejas, fabada) beats the safe option, and full-at-14:30 beats empty-at-13:00. Order the menú even if you only want two of the courses; it still undercuts ordering one dish à la carte.
Flip your day Spanish-side: big cheap lunch, then a dinner of tapas taken standing and in motion. A caña costs €1.50–2.50 and in the right bars still lands with a free tapa; three stops make a dinner for under €15 including the walk between them.
The trick is geography — bar-dense streets where the crawl is measured in metres, not metro stops. Lavapiés, La Latina and the streets behind Sol keep the density; your hotel being inside it is worth more than any restaurant list.
Market counters after 13:00 serve the city’s best price-to-plate ratio. Bocadillo bars do lunch for €4–6 — calamares by Plaza Mayor is the famous one, but every barrio has a bocadillería with a better queue. Lavapiés adds the cheapest world food in Spain: Senegalese thieboudienne, Bangladeshi curries and €8 Indian menús on Calle Argumosa’s side streets.
Usera, one metro line south, is Madrid’s Chinatown and its best-value food neighbourhood full stop — hotpot, hand-pulled noodles and dim sum at prices the centre forgot. Treat the trip as sightseeing that happens to feed you.
Eat lunch at 13:00 or after 15:00 and you skip the queue for the same menú. Kitchens genuinely close 16:00–20:30 in traditional houses — the tourist restaurants that stay open are charging you for the convenience. Sunday night is the city’s gastronomic low tide; make it market-picnic night or Usera night.
And the oldest rule: tap water (agua del grifo) is excellent and free by law when you ask for it, terraces charge more than counters, and anywhere with a menu in six languages has already priced you in.
Curated picks are coming — meanwhile, the live search covers every bookable property at the same price or better.