A bronze clock, dark green-and-white marble accents, wooden chairs, and Victorian-style decorative touches set a different tone from the usual Arlington dinner reservation. Restaurant506 occupies The Sanford House Inn, an older house with the quiet, composed air of a small mansion rather than a conventional storefront.
The result is a restaurant that works nicely for more than one mood. Brunch can be leisurely, a date-night dinner can stretch into several courses, and a birthday or anniversary has a setting that already looks prepared for an occasion without becoming stiff or overly ceremonial.
The Sanford House location is important to the visit. Restaurant506 is part of the inn property, with a spa across the street, so arriving here feels more like pulling into a tucked-away destination within the city than stepping into a strip-center dining room.
Rooms with a little history in them
Inside, the old-world character comes through in the small elements as much as the larger room. Hand-stitched-looking textiles, antique-minded furnishings, and those marble details give the dining spaces texture. It is refined without looking showroom-perfect.
The mood generally stays calm enough for conversation. A brunch visit may carry a little more energy, but the dining rooms have the measured pace that makes a long lunch or unhurried dinner appealing.
The bar offers another version of the atmosphere. A high-top table has paired a view of a 1946 film with 1960s jazz in the background—a pleasant mix of old cinema, cocktails, and a bit of lingering before dinner.
Garden tables when the weather cooperates
Restaurant506 also has outdoor seating across patio, terrace, courtyard, and gazebo areas. Garden-oriented tables change the feel of the meal, particularly for a relaxed brunch or an evening reservation that begins before sunset.
A courtyard or gazebo seat is not just an overflow option here; it can be a lovely reason to choose the property. The garden view gives an anniversary dinner or special lunch a quieter backdrop than most city dining rooms can offer.
Outdoor tables and garden views depend on conditions and availability that day, so they are best treated as a request rather than a promise.
Brunch with range
Brunch has enough variety to accommodate a table with very different appetites. Eggs Benedict, omelets, sandwiches, chicken-and-mushroom fettuccine, and a dish called The Sanford have all appeared among the offerings, moving the menu beyond the predictable sweet-and-savory brunch split.
That pasta is an especially useful reminder that brunch here need not be limited to eggs and pastries. A guest who wants a more substantial midday plate can settle into something warm and savory, while someone else can stay closer to a classic Benedict or omelet.
Drinks can make the table feel more festive without turning the meal into a loud affair. A mimosa carafe has included a hibiscus-and-lemonade variation, and mocktails have also been available. It is an easy format for sharing a toast at a birthday table or simply extending a weekend meal.
A dinner that takes its time
Dinner is where Restaurant506 can take on its more romantic, multi-course character. The menu has included seafood, meat, and pasta dishes ranging from duck, veal, filet, and lamb chops to seafood pasta, shrimp, and gnocchi.
Some dinners begin with an amuse-bouche. One small opening course brought together blackened sea bass, red pepper coulis, pickled onion, and cucumber, the sort of composed bite that signals a kitchen paying attention to the details before the entrée arrives.
Bread service has its own fans, notably for bread with a crisp exterior and soft center. It is a modest pleasure, but at a meal built around pacing, good bread on the table is never wasted.
For a starter, the beef French onion soup has featured shaved prime rib. Other dishes that have appeared include peach-burrata salad, scallops with bacon jam, crab cakes, pancetta-crusted sea bass, pesto gnocchi, and surf and turf. The house salad has paired mixed greens with candied pecans.
A blackened halibut entrée has been served with Cajun fettuccine, mushrooms, spinach, and lemon beurre blanc. It is an example of the restaurant’s willingness to put a more familiar fish dinner beside richer, Southern-leaning pasta notes rather than keeping each element overly restrained.
A blood-orange sorbet has also appeared between courses as a palate cleanser. That small pause suits the room: dinner here does not have to be rushed from appetizer to check.
Cocktails and a proper dessert finish
The cocktail list has room for a little personality. The French 506 Martini has been a light, citrus-forward choice, while the Living in Pearadise cocktail brought sweetness, warm ginger spice, and a ginger garnish.
Dessert can be as celebratory or as simple as the evening calls for. Limoncello cake, crème brûlée, and bread pudding have all been served; the limoncello cake has arrived with fresh fruit and cream.
For twin birthday guests, the kitchen once sent out separate desserts, including a chocolate Florentine-style confection and limoncello cake. Such gestures should not be assumed as standard, but they fit the restaurant’s attentive approach to marking a special table.
Built for celebrations without making a spectacle of them
Restaurant506 sees its share of birthday dinners, twin celebrations, and wedding anniversaries, and its service style suits those occasions. Staff have been known to talk diners through menu choices, help pace courses, and assist with the practical little details that make a group meal run smoothly.
A birthday card placed at the table and help with photographs are examples of the personal attention diners may encounter. The tone is thoughtful rather than theatrical, which is often exactly what a couple or family wants from a milestone dinner.
That same polish helps on an ordinary evening. Knowledgeable, friendly service and carefully presented plates give a simple reservation enough occasion to feel special without requiring a formal event.
A few useful arrival notes
Reservations are recommended for brunch, when seating is limited, and they are a sensible choice for dinner or a celebration as well. The restaurant is inside The Sanford House, so navigation users should look for the property rather than expecting a separate restaurant storefront.
Parking is free near the building, with additional overflow parking associated with the property across the street near the spa. Availability can vary with the time of day or events on the property.
For an intimate dinner, an easygoing brunch, or a garden-facing table for a special date, Restaurant506 offers an unusually graceful setting right in Arlington.