It is ok but not great. Construction is not modular as noted in questions - you cannot omit a shelf due to construction method. This unit uses a rod in each leg which ties from the glass top to the foot and just sandwiches the shelves using the hollow tubes and plastic caps. Another similar unit I have uses inserts / studs in each vertical element which makes more sturdy unit in my opinion plus allow levels to be omitted..
In the black unit the bottom of each shelf is painted which makes them opaque.  Overall the unit looks ok when assembled.
On my vinyl plank floor the unit was quite uneven and has no way to adjust feet. Had to shim under one foot to be stable.
(Photo shows unit inverted, partially assembled)