Isabelle's Osteria

About Isabelle's Osteria

Modern Italian restaurant with private dining and full buyouts—ideal for private events, corporate dinners, and birthday celebrations.

Private event venue in New York, NY | Isabelle’s Osteria Located at 245 Park Avenue South in Manhattan’s Flatiron District, Isabelle’s Osteria brings modern Italian sophistication to one of New York’s most dynamic dining neighborhoods. The space blends rustic warmth with contemporary elegance—think golden lighting, dark woods, and a lively open kitchen that gives the restaurant its signature energy. Under the direction of Executive Chef James Tracey, the menu reimagines classic Italian flavors with refined technique and seasonal ingredients, making it a standout destination for private dining and celebratory events. Isabelle’s Osteria offers multiple private and semi-private options, each designed for intimate gatherings or larger group experiences. The private dining room accommodates up to 50 seated guests or 75 for a cocktail-style reception, while full or partial restaurant buyouts are available for large-scale occasions. Guests can enjoy customized multi-course menus, curated wine pairings, and elevated service tailored to both social and corporate events. The restaurant’s thoughtful design and flexible layout allow for everything from elegant rehearsal dinners to lively birthday celebrations and professional networking events. Choosing Isabelle’s means selecting a venue that embodies timeless hospitality and effortless style. Its Flatiron location offers easy access from Union Square and Gramercy Park, while the atmosphere balances downtown chic with classic Italian warmth. Whether planning a corporate dinner, anniversary party, or full restaurant buyout, Isabelle’s Osteria provides an exceptional private dining experience defined by quality, comfort, and understated luxury. Types of events: Rehearsal dinners, corporate dinners, birthdays, weddings, cocktail parties, holiday gatherings, and full restaurant buyouts. Book your next private dining experience at Isabelle’s Osteria today.