Happy Hour

Mastro's Steakhouse San Francisco

Union Square · Upscale Steakhouse

GOOGLE★ 4.3994 YELP★ 3.91,022 TRIPADVISOR★ 4.137Google: higher than 8% of venues in San Francisco

The happy hour

Drinks

Classic cocktails — $14
California wine — $14
Premium beer — $9

Food

Wagyu beef bites — $20
Steak tartare — $18
Seasonal bar bites — $14–$20

Prime USDA dry-aged beef. Live music. SoMa / Downtown border. OpenTable top fine dining pick. Placeholder — happy hour details to be verified and filled in.

Deal last verified April 2026.

The space

Photos: Google Maps

The vibe

Award-winning West Coast steakhouse with prime USDA dry-aged beef, live music, and power-dining atmosphere. OpenTable's top fine-dining SoMa destination — a natural anchor for the neighborhood's business and celebration dining circuit.

Wheelchair-accessible entrance
Cozy
Romantic
Hip
Upscale
Good for groups
Known for cocktails
Known for wine
Live music
Google: happy hour food
Takes reservations
Outdoor seating

Is that score good?

Almost everywhere scores 4–5 stars, so each site's score is shown against every venue in the Atlas rated on that site — here in San Francisco, and across the US. The gold bar is this spot.

GOOGLE ★ 4.3 994 ratings ↗

In San Francisco 109 rated venues Bottom quarter

3.8 4.0 THIS SPOT 4.3 4.5 4.8

Rated higher than 8% · tied with 16% · lower than 76% of the others · median ★ 4.5

Across the US 2,042 rated venues Bottom quarter

3.1 3.5 4.0 THIS SPOT 4.3 4.5 5.0

Rated higher than 8% · tied with 9% · lower than 83% of the others · median ★ 4.5

YELP ★ 3.9 1,022 reviews ↗

In San Francisco 109 rated venues Bottom quarter

3.2 3.5 THIS SPOT 3.9 4.5 4.8

Rated higher than 17% · tied with 11% · lower than 72% of the others · median ★ 4.1

Across the US 1,993 rated venues Bottom quarter

2.0 3.0 3.5 THIS SPOT 3.9 4.5 5.0

Rated higher than 18% · tied with 9% · lower than 73% of the others · median ★ 4.1

TRIPADVISOR ★ 4.1 37 reviews ↗

In San Francisco 84 rated venues Below median

2.0 3.0 3.5 THIS SPOT 4.1 4.5 5.0

Rated higher than 22% · tied with 11% · lower than 67% of the others · median ★ 4.3

Across the US 1,653 rated venues Below median

1.0 2.5 3.0 3.5 THIS SPOT 4.1 4.5 5.0

Rated higher than 25% · tied with 9% · lower than 66% of the others · median ★ 4.3

Each bar counts venues at that rating (0.1-star steps), lowest on the left; the curve starts at the lowest score anyone has. Ratings captured October 7, 2026.

Getting there

399 Geary St, San Francisco, CA 94102

More in Union Square

620 Jones Union Square · New American Google ★ 4.3 (1,183) Tue–Fri 4–6 PM Craft cocktails — discounted during happy hour

Magnin Street Cafe & Bistro Union Square · Californian / American bistro Google ★ 4.7 (607) Every day 5–7 PM Happy-hour drinks and bites — the venue's site lists the hour but not the prices

The Cavalier Union Square · Modern British Google ★ 4.4 (1,067) Mon–Sat 4–6 PM Happy-hour cocktails (Rye-nar 50/50, Glasgow Squeeze) — $10