The interior of the Sun Fast 37 is comfortable and spacious for its size, although not as luxurious as the Sun Odyssey 37. It has three cabins, one forward and two aft, with double berths that can accommodate six people. It also has a large saloon with a U-shaped settee and a folding table, a galley with a stove, an oven, a fridge and a sink, a navigation station with an instrument panel and a chart table, and a head with a shower and a toilet. It has plenty of storage space, ventilation and natural light throughout.