So i'm considering putting a shed up in the garden exclusively for VR as space in the house is a little limited. 

This "Best Barns Newcastle" shed is 12ft x 16ft and I reckon that should be a good VR area right? I'll have a little shelf on one wall which holds the PC and then the entire rest of the shed will be empty space. 
I live in quite a warm and dry climate so I don't have to worry much about the temperature or condensation issues. 

This should give me a fairly good experience but do you see any hidden downsides to it that i've not considered?