Seafood€€MarinaMon-Tue 12:00-15:00, 19:45-22:45; Thu-Sun 12:00-15:00, 19:45-22:45
Trattoria da Serafino works a corner of Via Lepanto in Cagliari, an air-conditioned room of local fish plates and a back room for long lunches.
Order: Whatever local fish is on the board that day.
Tip: Closed Wednesday; the private back room takes the business lunches, so the front fills with regulars.
Bistro€€VillanovaTue-Sat 12:00-15:30, 19:00-23:30; Sun 12:00-15:30
Bistrot 100 on Via Tuveri is the Villanova bistrot Cagliari uses for a proper weekday lunch, short menu, wine by the glass, service both sittings.
Order: The lunch plate of the day with a glass of Vermentino.
Tip: Sunday is lunch only and Monday the room is dark. The Gambero Rosso 2026 guide lists it among the city's informal rooms.
Japanese izakaya€€San BenedettoWed-Sat 12:30-15:00, 20:00-23:00
Gaijin Izakaya brings small Japanese plates to Cagliari on Via Giacomo Puccini, a narrow room of skewers and donburi that the Gambero Rosso guide rates.
Order: A run of skewers off the charcoal counter.
Tip: Only four days a week, Wednesday to Saturday, and both sittings are small, so book ahead rather than walking up.
Japanese€€MarinaMon 12:30-14:30, 19:30-22:30; Wed-Thu 12:30-14:30, 19:30-22:30; Fri-Sat 12:30-15:00, 19:30-23:00; Sun 12:30-15:00, 19:30-22:30
Osteria Kobuta cooks Japanese-Sardinian plates in Cagliari off Largo Carlo Felice, a seasonal menu built for sharing in a room of maybe ten tables.
Order: The seasonal sharing menu, start to finish.
Tip: Closed Tuesday, and the kitchen writes a new menu each season; WhatsApp booking is the fastest way to get a table.
Italian€€CastelloTue-Sun 13:00-14:00, 20:30-22:00
Pani e Casu sits on Via Santa Croce inside Cagliari's Castello walls, serving bread, pecorino and Sardinian home cooking a few metres from the ramparts.
Order: Pane carasau with pecorino and a glass of Cannonau.
Tip: Service windows are tight, one hour at lunch and ninety minutes at dinner, so book; Monday the door stays shut.
Italian€€MarinaMon 12:30-15:00, 19:30-23:00; Wed-Sun 12:30-15:00, 19:30-23:00
Panefratteria builds its Cagliari menu on pane carasau, the sheet bread softened into pane frattau and zuppa gallurese in a modern room on Via Azuni.
Order: Pane frattau, tomato, pecorino and a poached egg.
Tip: Closed Tuesday; there is a garden at the back and the grappa and Sardinian wine list is longer than the food menu.