One of the city’s best modern furniture and accessories showrooms, Morlen Sinoway Atelier, is having a sample sale starting March 3 at 9:30. Find discounts of 20 to 70 percent off lighting, area rugs, accessories, chairs, and side tables. The sale runs through the end of March. Morlen says that last year he “dipped his toes” into the sample-sale waters, but this year the sale is much bigger.