Quattro

Quattro is a cocktail bar on Milou 3 in Ermoupoli, the capital of Syros, operating on a tight schedule that keeps it firmly in nightlife territory: doors open at 8 PM and close at 4 AM, but only on Friday and Saturday nights during the autumn season, with Monday also listed as an operating night. The address places it in the walkable core of Ermoupoli, close to the neoclassical architecture and café-lined squares that define the upper town.

With a 4.4-star rating from 130 Google reviews and an Instagram following that describes it as "one island, one bar," Quattro has built a recognizable identity in Syros's compact but genuine nightlife scene. The bar is connected to a separate pizza operation — Quattro Pizza Bar — suggesting the same ownership group runs both, though the Milou Street venue focuses on drinks rather than dining.

Syros is not a party island in the way Mykonos or Ios are, which means the bars that do stay open late tend to attract a mix of locals, year-round residents, and travelers who prefer a more low-key atmosphere over DJ-driven beach clubs. Quattro fits that profile.

What to Expect

Quattro operates as a cocktail bar first. The "cocktail bar" tag in its Google listing, combined with Instagram content referencing cocktail culture and amaro pours, points to a drink-forward menu with some European and Italian sensibility — amaro del capo (a southern Italian herbal digestif) has appeared in the bar's social content, hinting at a broader spirits selection beyond the standard Greek bar list.

The bar sits on Milou Street in Ermoupoli, a small address that suggests an intimate venue rather than a large club. Ermoupoli itself is a lived-in city — the administrative capital of the Cyclades — with marble-paved streets, Venetian and neoclassical buildings, and a population that actually uses its bars year-round. That gives Quattro a different character from seasonal tourist bars: when it's open, the crowd tends to include regulars.

The late hours — 8 PM to 4 AM — mean this is an evening and late-night destination, not somewhere you visit for an afternoon drink. Come here after dinner in the city center, or make it the anchor of a longer night out in Ermoupoli.

Given the limited open nights (Friday and Saturday confirmed, Monday also listed), it's worth checking the current schedule before planning around a visit, particularly outside peak summer months when hours may change again.

How to Get There

Milou 3 is a short walk from the central Miaoulis Square (Πλατεία Μιαούλη), the main gathering point in Ermoupoli with its grand town hall. From the square, head in the direction of the upper residential streets — the bar is within a few minutes on foot. Ermoupoli is compact enough that most accommodation in the town center puts you within a 10–15 minute walk of the address.

If you're arriving by ferry at Syros port, the main terminal is at the base of Ermoupoli's hillside. From there, it's roughly a 10–15 minute walk uphill into the town center, and then onward to Milou Street. Taxis are available at the port and around Miaoulis Square. Street parking is available in the surrounding area, though the narrow streets of Ermoupoli can be congested on weekend evenings.

Best Time to Visit

Quattro runs a seasonal schedule, and hours shift between summer and autumn. During the autumn, the bar operates only on Friday and Saturday from 7 PM; the summer schedule may include additional nights. Check the bar's Instagram account (@quattro_syros) for current opening hours before visiting — this is the most up-to-date source given no website is listed.

Arriving early in the evening (8–9 PM) typically means a quieter bar with easier seating. The crowd builds later, and the bar stays open until 4 AM, which is late even by Greek standards. If you want the full energy of the place, aim for 11 PM onwards on a Friday or Saturday in summer.

Syros has a mild Cycladic climate, and Ermoupoli's streets stay pleasant well into October. The bar's year-round-leaning operation (it's not purely a summer pop-up) reflects the city's permanent population base.

Tips for Visiting

• Confirm the current schedule before going. Hours listed here reflect the research bundle, but Quattro's opening nights shift seasonally. The Instagram account (@quattro_syros) is the most reliable source.
• It's a late-night venue, not an early-evening one. The earliest opening time listed is 8 PM, and the bar stays open until 4 AM — plan accordingly and don't arrive expecting a pre-dinner aperitif situation.
• Check for the pizza bar connection. Quattro Pizza Bar appears to be related to this venue; if you want food alongside drinks, it may be worth investigating whether they operate in tandem on the same nights.
• Bring cash as a backup. Card acceptance at smaller Greek cocktail bars varies, and there's no confirmed payment information available. An ATM on Miaoulis Square or nearby will cover you.
• The bar has a recognizable local identity. Its "one island, one bar" tagline and social media presence suggest it takes its reputation seriously — dress and conduct accordingly; this isn't a tourist trap.
• Syros nightlife is concentrated but quality-focused. Unlike busier party islands, Ermoupoli has a handful of well-regarded bars rather than dozens of options. Quattro is consistently well-rated, which in this context carries more weight than on a larger island.
• Contact ahead for group bookings. The phone number (+30 694 415 3690) is available for direct contact. For larger groups or special occasions, calling ahead is advisable.

Practical Information

Quattro is located at Milou 3, Ermoupoli, Syros 841 00. The phone number is +30 694 415 3690. No website is currently listed; the Instagram account (@quattro_syros) carries the most current information on hours and events. The bar holds a 4.4 Google rating from 130 reviews.

Confirmed opening hours (verify before visiting):

• Monday: 8:00 PM – 4:00 AM
• Tuesday: Closed
• Wednesday: Closed
• Thursday: Closed
• Friday: 8:00 PM – 4:00 AM
• Saturday: 8:00 PM – 4:00 AM
• Sunday: Closed

Note that autumn hours have been posted as Friday and Saturday from 7 PM, which may differ from the above. Seasonal variation is common for Cycladic bars, so always check current postings.