I guess I enjoyed this movie more than the previous reviewers. I might categorize it as a psychodrama, and found it interesting to watch.
The performances of the principals was top notch. Very good, deep acting. The story line was a bit convoluted. I might have understood and enjoyed it better had a caught the reason the young man's (Justin) attitude suddenly changed, before the older man (David) had revealed his intentions.
There is a scream from outside when a raccoon is caught in a trap on the dock. And while David is disposing of the carcass, Justin looks at some of the artists other works. That apparently unnerves him, but honestly, I'm not completely sure why.
I enjoyed the interplay between the characters, which moved forward in fits and starts, with more being revealed by each during this dance between the two during the film.
A tango was used in the plot to effectively reflect this "dance." A sultry, complex dance, which David explains was a dance often done by prostitutes, so most "nice" women would refuse to dance it. Thus, it was often danced by two men.
I also liked the easy flow of dialog in different languages, which were comfortable for each of the characters as they interacted. The film has subtitles that translate English into Spanish and Spanish into English.
The interactions were very interesting to watch, as the motivations and indeed the veracity of each were somewhat shrouded in mystery, with deeper and darker truths being revealed over time.
Technically, the film works very well. Nice sets, camera work, lighting, etc.
There is a sense of mystery as one can't help but wonder what will happen next, and to whom.
I was a bit let down by the ending. I thought the film was building an emotional tension throughout, but for me, it just fizzled at the end.