Transforming furniture units are quite popular with the urban dwellers these days owing to the space problems. Lately, we covered the amazing transforming furniture by Roentgens, the renowned German cabinetmakers of the 18th century. The convertible sofa pictured above can be easily transformed into a small dining table with six padded stools for your extra guests. While the seat turns doubles as six padded stools, the backrest transforms into a countertop. Designed by Julia Kononenko, this convertible sofa is a highly functional furniture piece if you cannot afford more space.