These beds (2 twins) look very nice and are sturdy. All slats can screw into the frame, but there are no pre-drilled holes, so either you have to drill or use wrist and fingers. They would be even better with a headboard  - as-is, a short side must be against a wall.

Pros: Comes with short legs and long legs (for use with inner springs).
Cons: Needs an optional headboard. Holes for slat screws should be pre-drilled.