This is a perfect combo of my two favorite ideas for that space under the stairs leading to the basement. A reading nook AND book storage and shelves . assuming that there is enough space for this there.
Elegant pale gray covered terrace, veranda, patio - with the elegant storage for outdoor garden items! This is the way to do outdoor storage! Also -- notice the long metal drain too -- excellent idea for stormwater and rainwater control!
Love this play area over the bed, like the anti-loft bed. I think I& leave off the first couple of steps of the ladder and make it a safer place for the older kids to play with and store their LEGO creations. (Apartment Therapy with loft bed inspiration)