This scenes has been edited pretty conventionally, in terms of shot-reverse-shot, continuity, etc. It maintains continuous action, a realistic-looking eye line and a believable soundscape, minus a few moments where the sounds are exaggerated for dramatic effect. This is mostly during cutaways, such as when the fish is placed on the table, the cigarette is extinguished and the gun is cocked.
The way the scene was edited implied to me that something horrible was going to happen: the nervousness and the power imbalance between the characters was emphasised through sweat and acting, and the fact that a certain amount of distance is maintained between them. The repetitive groaning or whatever that is – it may have been the ceiling fan – also added an ominous tone, as we weren’t entirely certain what that sound was.
I didn’t really understand why the one guy had to go to the bathroom to throw up, I wasn’t sure why that was kept in. Maybe it was just to add suspense, so that it would seem like he’d burst out and just shoot the other guy in the head or something. I also thought that the way the scene continued past the exit of the assassin suggested that perhaps his victim might be still alive, but I don’t really know.