When shopping for a double loft bed with desk, never forget to check the sturdiness. After all, you'll be sleeping and working on it. If you can, give the entire thing a good shake. You'd want to make sure it's not rickety. Keep in mind that sturdiness has more to do with the build quality, rather than the material.
There's no "perfect" double loft bed with desk that suits everyone. It's up to you to decide which factors are the most important for you. Just follow the tips we gave you and you will find the one that matches your criteria.