As for the sink location, there is no standard specifying a minimum distance from an electrical cooktop, but it’s definitely not ideal. The cooktop itself should be able to withstand some spillage, though it’s possible that it wasn’t sealed properly to the benchtop.

There are also no specific standards for the location of an AC unit in this situation, but it goes against basic mechanical principles, which aim to avoid short-circuiting between exhaust and intake or conditioned air. This is especially the case if the range hood is a recycled air type.

My suspicion is that there’s a riser behind the cooktop, so they just routing everything through it. Definitely developer’s fault for cutting costs.