The plot of this movie is a std timeloop idea- an elevator that resets to its statting point and time, the 10th floor everytime it reaches the ground. I enjoyed this film- maybe because the Spanish hid some of the creaky bits others have identified, but I was left unfulfilled by the ending. Spoliers here**** The lift was apparently engineered as a time machine by a former caretaker of the building- continuing experiments that had been banned from his previous job (unspecified). Powered by lightning, the experiments are a failure as the lift becomes a time loop machine endlessly recycling its journey from floor 10 to 0. Its inventor becomes trapped and eventually dies in the lift operating room. Before he expires he derives a "manual escape system" but like launching nuclear missiles the physical design of the lift means that it requires two people to operate it. Sadly he has noone and fies trying.

Some time later a lightning strike reactivates the lift which starts its new occupants, an arguing couple taking out the rubbish, on an endless cycle of time loops. Through iterations and pauses they discover the control room and the dead inventor, they operate the manual system and escape... but do they? Here the film really fails because nothing is explained. The manual system starts a strange countdown- but to what? The doors open and the couple exit talking to themselves and apparently ignoring their surroundings. The finally discard their trash and the film ends with a shot of lightning hitting high rise buildings then panning to close with a close up of their rubbish- So??? Is this simply showing the couple have literally and metaphorically disposed of their baggage and are moving on in life? Surely thats too trite an ending for a film which was obviously considered deeply? Perhaps there's a clue from the wider shot of the hi-rise buildings. The couple spoke many times of the age of their lift- an 80s structure presumably then installed in an 80s building? There seems little that is 80s about the buildings shown at the end, massive highrises and once again lightning. Might the manual solution not have simply released the occupants, but restored full time machine function? There is no obvious signs of the futur other than these buildings and the couple are oblivious to any differences- but its night-time and its raining. There are no clues in the (to my mind inexplicable) close up of the discarded rubbish. My opinion- the film-makers were either too subtle or simply missed a trick, but this ending really does leave you unfulfilled. If anyone has a definitive interpretation please let me know!

There are several movies about elevators pretty entertaining, this is no the case, also the elevator music is absolutely annoying

The first half hour is interesting. The camera works well. Then is just plain boring. Jusy stick with grounghog day