2023 GRAND DESIGN SOLITUDE 378MBS – 4646C

If you’re looking for a fifth wheel that gives you the space of a residential home and the flexibility to travel anywhere, the 2023 Grand Design Solitude 378MBS deserves a serious look. This mid-bunk model is built for comfort, practicality, and full-time living — whether you re on the road for a weekend or a year. The 378MBS combines wide-open living spaces, smart storage, and a layout that works just as well for families as it does for couples needing a dedicated office or guest room.

Step inside and you’ll notice how much natural light fills the living area, thanks to oversized windows and an open floorplan. The mid-bunk room adds extra sleeping space without taking over the main living area — perfect for kids, guests, or a quiet work-from-home setup. Overhead, a loft adds even more versatility. The kitchen feels more like something you’d find in a home than an RV, complete with solid surface countertops, a large island, and residential appliances. In the front, the master bedroom delivers plenty of space, storage, and privacy, with washer/dryer hookups ready if you want to go all in on full-time travel.

• Length: Approx. 41 feet
• Sleeps: Up to 8
• Mid-Bunk Room: Great for guests, kids, or a private office
• Loft Area: Additional sleeping or storage space
• Living Room: Theater seating, tri-fold sofa, fireplace, large TV
• Kitchen: Island with stainless sink, solid countertops, residential fridge, large pantry
• Bathroom: Full-size shower with skylight, vanity, and linen cabinet
• Bedroom: Queen bed standard (King optional), full wardrobe, dresser, washer/dryer prep
• Climate Control: Dual A/Cs, 35,000 BTU furnace, fully insulated for four-season use
• Construction: Wide-body frame, drop-frame chassis, high-quality laminated walls
• Outdoor Features: Dual power awnings, pass-through storage, exterior speakers

What makes this Solitude stand out? The 378MBS strikes a rare balance between open-concept living and private spaces. It’s ideal for RVers who want room to spread out, host guests, or stay productive on the road — all without giving up the high-end touches Grand Design is known for. If you want a fifth wheel that feels more like home, this one delivers.