For a cafe sidewalk seating area, I’d keep the furniture compact, durable, and easy to move. The best setup usually starts with small bistro tables—around 24 to 30 inches wide—paired with stackable chairs in powder-coated aluminum or steel. They handle weather well, are light enough for staff to rearrange, and don’t make the sidewalk feel crowded. If you want a warmer look, teak or HDPE tops work nicely, but make sure the frames are still weather-resistant and easy to clean.
I’d avoid bulky armchairs and large communal tables unless you have plenty of space. Instead, mix two-seat bistro sets with a slim bench or a few bar-height seats along the window. Add sturdy planters to define the edge, and use a weighted umbrella or awning for shade without blocking foot traffic. Cushions should be quick-drying and removable, or skip them altogether for lower maintenance.
Practical details matter just as much as style. Check your local sidewalk clearance rules before you buy, choose furniture with adjustable feet or leveling glides for uneven pavement, and anchor anything lightweight so it stays put on windy days. A flexible layout with stackable chairs and small tables will give you the most use out of a tight urban space while keeping the cafe looking welcoming and polished.