Mini Greenhouse

They get hot very quickly in direct sunlight, so you have to be prepared to dash out in the morning and open the ventilation.
I'm too lazy for that, so I stand mine with the back towards the prevailing winds, leave the door open and peg a layer of fleece across the door opening. That keeps out the drafts and retains a cosy microclimate without allowing temperatures to build up to to roasting when the sun shines.

Depends what you are growing but if you plan on growing seedlings in there then , as your first reply said, it gets very hot and small young plants can very easily get burnt.