For a traveler in 2026, €1,000 is very tight for a full month in Madrid and would require a "survivalist" or very strict budget style. If this amount must cover accommodation, you would be limited to a long-term hostel dorm bed or a shared room in a flat far from the city center, as even basic Airbnbs or mid-range hotels can easily exceed €1,500–€2,000 per month. If the €1,000 is purely for spending money (after housing is paid), it is quite comfortable, allowing for approximately €33 per day. This would cover a "Menu del Día" for lunch (€12–€18), a daily metro pass, and some tapas in the evening. Madrid is more affordable than London or Paris, but rising inflation in 2025 and 2026 has pushed the "comfortable" tourist budget for a month closer to €1,500–€1,800. To make €1,000 work, you should utilize free museum hours (like at the Prado on Sunday evenings), cook most of your meals using local markets, and stick to the city's excellent and affordable public transit rather than using taxis.