La Flaca
Castellana, Madrid
Restaurant in Madrid, Spain
Book with PearlThe Read
Dress
Casual
Why go
La Flaca is a practical Salamanca option when location and flexibility matter more than a documented chef, cuisine, or wine-program identity. Use it for an easy meal around Serrano, but cross-shop more defined Madrid restaurants if the night is meant to be food- or wine-led.
About La Flaca
La Flaca is a Madrid venue with casual dress code and broad opening hours. Beyond those basics, there is not enough public detail here to describe a specific chef, cuisine, menu format, wine program, price level, booking policy, or award history.
The practical case for considering it is timing. La Flaca opens at 9 AM Monday through Saturday, at 11 AM on Sunday, runs late, with closing times ranging from midnight to 2 AM depending on the day. Treat it as a flexible Madrid option rather than a destination to plan around a confirmed culinary format.
Use it as a flexible Madrid option, not the anchor meal
La Flaca makes the most sense for a diner who wants a casual venue with long hours and does not need a tasting menu, chef-driven identity, published wine credentials, or confirmed accolades. If the night is built around a more specific restaurant brief, compare it with other Madrid dining choices. Start with Pearl's Madrid restaurants guide, then consider named alternatives such as Amós, Street XO, or Sushi Bar Hannah.
Do not book La Flaca solely for an wine, cocktail, or cellar program. The safer expectation is a casual Madrid venue with useful hours, not a restaurant whose identity rests on a specific drinks program or menu format. That can still be useful if ease and timing matter most.
Best fit: casual plans with broad timing
The strongest fit is a casual plan where opening hours matter: a daytime stop, an early evening meet-up, or a late option on a night when a more formal dining room is not the priority. It is less useful as a basis for conclusions about Madrid dining unless you confirm current menu, reservation, service details directly.
For broader planning around the city, pair this page with Pearl's Madrid hotels guide and other Madrid planning resources. If the priority is a restaurant-led itinerary, compare La Flaca with Madrid venues that publish clearer details about format, menu, service style.
Planning details
- Location
- C. de Serrano, 45, Salamanca, 28001 Madrid, Spain
- Reservations
- Book on OpenTable
- Website
- laflacamadrid.com
- Phone
- +34911980332
The take
The Take
The Vibe
La Flaca sits at number 45 on Calle de Serrano, and its setting in Salamanca immediately frames the experience: polished, deliberately pitched and attentive to register. The neighbourhood’s boutiques, offices and well-heeled residents demand a level of service and a menu that reads as assured rather than casual. The restaurant negotiates two tempos — purposeful daytime meals and a more deliberate evening rhythm — which gives it a refined, classic energy. Expect a place that leans into the district’s expectations: stylish but unshowy, with a kitchen tuned to both professional lunches and more considered dinners.
Best For
La Flaca is best approached with timing in mind. Midday service caters to the nearby offices and retail professionals, making it an excellent choice for long business lunches or a measured midday meal; the text explicitly notes lunch as the main event in this part of Madrid. Evenings shift to a different, more deliberate dining public, so dinner suits those seeking a focused, composed meal in a polished setting. The restaurant’s location on Serrano means it’s well positioned for weekday business dining and after-work meals that stretch into a relaxed evening.
Ordering Tips
Stick to the signatures highlighted in the description: calamares fritos, chipirones a la plancha and delicias de merluza. Those dishes are noted as La Flaca’s standout items and reflect the Spanish seafood focus customers expect. For a lunchtime visit come prepared to linger — the neighbourhood’s midday tempo prizes unhurried meals — while dinner visits suit a more deliberate pace. Reservations or planning around service times is sensible given the street’s competitive lunch and dinner scenes, though the description does not specify reservation policy.
Venue details
Ambiance
Welcoming and comfortable atmosphere with a lively vibe perfect for locals and casual gatherings.
Tags
Vibe
Best For
Experience
At the Table
- Dress Code
- Casual
- Noise Level
- Conversational
- Service Style
- Casual
- Meal Pacing
- Standard
- Capacity
- Small
Signature Dishes
- calamares fritos
- chipirones a la plancha
- delicias de merluza
Planning details
Location
C. de Serrano, 45, Salamanca, 28001 Madrid, Spain · Directions
Also consider
Also Consider
- Amós, Spanish, Modern Cuisine, €€€
- Street XO, Asian Street Food, Asian Street Food
- Sushi Bar Hannah, Japanese, €€€€
- Tetsu, Notable alternative
- Las Brasas de Castellana, Notable alternative
Restaurant context
How La Flaca compares in Madrid
La Flaca is the easier, lower-commitment choice in this set, but it also has less published definition. Amós is the clearer pick for Spanish modern cuisine and a more deliberate meal, especially if value is measured by culinary focus rather than convenience. Choose La Flaca when Salamanca location wins; choose Amós when the restaurant itself needs to carry the evening.
Street XO is the sharper contrast: louder, more specific, built around Asian street-food energy. It is a better fit for diners who want a high-impact Madrid night, while La Flaca works better for a calmer plan with less friction. Sushi Bar Hannah sits at the opposite end on price signal, with a €€€€ Japanese positioning that makes sense for diners who want to spend on a more defined format.
Tetsu and Las Brasas de Castellana are the cross-shops to check when availability or mood decides the booking. If the brief is simply “good Madrid dinner without over-planning,” La Flaca can work. If the brief is value for a serious food-focused night, the peers with clearer cuisine and price signals are safer choices.
Around this place
Discover more on Pearl
Unlock the full La Flaca guide in Pearl, including awards, comparisons, FAQs, planning details, and nearby places.
Compare La Flaca
| Venue | Location | Cuisine | Price | Awards |
|---|---|---|---|---|
| La Flaca | Madrid | ; | ; | No published awards |
| Amós | Madrid | Spanish, Modern Cuisine | €€€ | Guía Repsol Soles 20262026 OAD Top Restaurants in Europe Recommended2026 Michelin Plate2025 OAD Top Restaurants in Europe Ranked · #4502025 Michelin Plate2024 OAD Top Restaurants in Europe Ranked · #4042024 Michelin Plate |
| Street XO | Madrid | Asian Street Food | ; | 2026 OAD Casual in Europe Ranked · #65Guía Repsol Soles 20262025 OAD Casual in Europe Ranked · #6372024 OAD Casual in Europe Ranked · #5112023 OAD Casual in Europe Recommended |
| Sushi Bar Hannah | Madrid | Japanese | €€€€ | 2026 OAD Top Restaurants in Europe Recommended2026 Michelin Plate2025 OAD Top Restaurants in Europe Ranked · #5792025 Michelin Plate2024 Michelin Plate |
| Tetsu | Madrid | ; | ; | 2026 OAD Top New Restaurants in Europe Ranked · #252026 OAD Top Restaurants in Europe Recommended2026 OAD Newly Added European Restaurants2026 Michelin Plate |
| Las Brasas de Castellana | Madrid | ; | ; | No published awards |
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How La Flaca Madrid compares with similar nearby venues.
FAQ
Frequently Asked Questions
What should I order at La Flaca?
There is not enough information here to recommend specific dishes. Treat La Flaca as a casual Madrid venue and check the current menu directly before deciding what to order.
What should I wear to La Flaca?
The dress code is casual. Comfortable, neat clothing should fit the setting.
What should a first-timer know about La Flaca?
First-timers should know the basics: La Flaca is in Madrid, the dress code is casual, the opening hours are broad. It opens at 9 AM Monday through Saturday, 11 AM on Sunday, closes between midnight and 2 AM depending on the day.
Is La Flaca good for a special occasion?
There is not enough information to present it as a formal special-occasion restaurant. It is better framed as a casual Madrid option unless you confirm current menu, setting, booking details directly.
