When it comes to attention-getting furniture, it's hard to top a modern curved sofa. An undulating design, like one that features the Gus* Mix Modular Arc, above, is a show-stopper, ideal for roomy, loft-like interiors, where plenty of seating is a given. But smaller spaces can benefit from a curving design as well. Case in point is the clean and compact Melinda Sofa from Artless, which features a gently rounded back that contrasts fetchingly with an angular coffee table or occasional chair. The Moooi Love Sofa , with its sumptuous round form, could hardly be more inviting if it tried.