Seemor

Mariscos Costa Alegre - Alum RockB+

1527 Alum Rock Ave, San Jose, CA 95116 · Seafood restaurant · San Jose

Lively mariscos hotspot with fast, friendly service, big portions, and booming music; great for groups and micheladas, but expect noise, occasional waits, automatic gratuity, and spicy-leaning flavors.

Why this grade

Mariscos Costa Alegre delivers solid neighborhood dining through excellent fresh seafood and standout attentive service that earn consistent praise. However, inconsistent execution during peak hours—cold plates, long waits, and occasional service lapses—prevents a higher grade. The festive, lively atmosphere suits groups seeking bold mariscos and micheladas, but the small parking lot and crowded conditions limit broader appeal.

One caveat: Noise levels are very high during karaoke or mariachi nights; quiet seekers may be unhappy

What to order here

What stands out

Opening Hours

Monday10:00–21:00 Tuesday10:00–21:00 Wednesday10:00–21:00 Thursday10:00–21:00 Friday10:00–22:30 Saturday10:00–22:30 Sunday10:00–21:30
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