Oslo Twin Bunk. This is the Oslo Twin Bunk from Serene Beds. The Oslo is finshed in a fine silver, giving it a modern look that would suit most bedroom styles. This high quality bunk has a sturdy build and comes with a wide step ladder for extra comfort and safety. The Oslo comes with a sprung slatted base on both the top and bottom bunk for extra support to help give an excellent night's sleep. And buy this Oslo Twin Bunk Now £149.00.