Bellaco is a Spanish word that can mean "naughty," "mischievous," or even "wicked." While it can have a playful connotation, in some contexts, especially in urban music, it can refer to something or someone that is sexually suggestive or raunchy.
In this song, the line "En un hotel bellaco me dejaste" (You left me in a bellaco hotel) implies a hotel associated with illicit or sensual activities, adding a layer of intrigue and a hint of a scandalous encounter. It's a word that stands out for its double meaning and its specific use in this context.
111 is a song about being hooked on someone who keeps pulling away.
The narrator keeps going back to a woman with green eyes who acts in public like she barely knows him, even though they have been seeing each other for months. When he needs her most she disappears, and he can tell that falling in love is not something she is interested in. The same question keeps coming back: why do you do me like this?
The hook turns that back and forth into one image. She stabs him and heals him, brings him back to life and kills him again. A night in a hotel ends with her gone. He wonders what someone did to her to make her this way, and admits that her mouth still tempts him even when he knows it is about to lie to him again.
The verse is where the hurt goes cold. She is difficult over text and easy face to face. He tells her she is going to die with a black heart, then catches himself: he thought she was different, but at the start they all seem different.
By the end he has stopped arguing. The song fades out on the two words it opened with, green eyes, repeated until there is nothing else left of her.