I am not a carpenter and this was my first attempt....you may want to put some slots in the solid wood panel under your bed. This will reduce the chances of your mattress going mouldy. Or just air your mattress outside occasional. I work in a bed shop and mouldy mattresses can happen quite quickly with moisture and heat.
The new Boutique Queen Wall Bed creates a more functional living space. Perfect for the guest room or any place where space is at a premium, this queen-size wall bed provides a sleeping area without taking up valuable living space.