Stand in the corner of the room before you buy anything. Walk the actual L shape with your arms out, feel where your elbows hit the wall, where your knees would hit the drawer unit. A corner desk only feels right if that corner already works for sitting still for hours, and a lot of corners in real apartments don't, they've got a radiator or a window that swings open into your face.
Where it goes wrong is anywhere near a doorway or a walkway, because the whole point of the shape is that it eats the corner completely, there's no sliding past it. I put one in a hallway nook once thinking I was being clever with dead space, and for two years I clipped my hip on the same drawer pull every single morning. Keep it out of anything you'd call a thoroughfare, even a small one.
Where it sits well is in a bedroom corner opposite the bed, or in a living room corner that would otherwise just be holding a sad plant. It pairs easily with a single bold chair, something with a bit of color or pattern on it, because the desk itself is almost always a quiet shape and it can carry one loud thing without the room tipping into chaos. A good reading lamp with a warm bulb on the surface does more for that corner than any amount of extra storage would.
The difference between a desk that lasts and one that doesn't is almost entirely in the corner joint itself, the place where the two sides meet. Cheap ones use a thin bracket and particleboard that flexes when you lean on it, you can feel it give a little, and it sounds hollow when you set a mug down, a flat clack instead of a solid thud. A well made one has a proper bolted or doweled joint under there, solid enough that you can push your whole body weight into the edge and feel nothing move. Run your hand along the underside before you buy, if it feels like cardboard wrapped in veneer, it is.
If you've never owned one, start plain. A simple wood toned L shape with clean legs and no glass, no glossy white laminate that shows every ring from every glass you forget a coaster for. Plain lets you build the color around it instead of fighting it, and you can always bring in a wild chair or a print above it later, once you know how you actually use the space.
First one goes in the bedroom corner, by the window, every time.