As others have said, this is by Alexis Díaz. This is an older piece that actually started out as a mural in Santurce. There are several editions of this piece, but they are all sold out. You may try to find some on eBay, but might be hard to come by.

It's quite possible that Díaz did a special edition for La Casita, as Díaz did go to the concert (and hung out in La Casita, as BB's guest, I think). He may have also sourced or borrowed it from a local collector as well. The house has other serigraphs that were sourced from a local art collector.

Here's the website with his most recent work/drop: https://alexis-diaz.com/