This did the job for my daughter’s dorm. It doesn’t give a ton of storage room but certainly better than nothing. It is, however, not sturdy. 
We did not put a microwave on the shelf. Hers was attached to the mini fridge.  This way we had two shelves for storage. I can’t imagine it’s strong enough to hold a microwave. Once she had her food and kitchen items on the shelves it held up nicely, but on its own it is very wobbly.