The Danish artist Esther Sarto, who lives in Copenhagen, has painted several gable paintings in Denmark, including Aalborg, where she besides this piece also painted for the royal couple during a visit in 2014.
The Danish artist Esther Sarto is only 25 and is from Copenhagen. Previously she went by the name Miss Take, but she has since then changed it to the current Esther Sarto. The piece here in Reberbansgade is called "Human Nature" and was painted during WE AArt in 2015. She has previously painted another gable painting in Aalborg, which you can find in Jernbanegade.
Read more about Esther Sarto here.