This plant is some kind of miniature petunia. We bought it for about $15 at the big green shed hammer shop. It has been a terrific balcony plant aside from a few moments of misery. I once let it go dry and it was not happy and wilted but quickly recovered.
It also looks miserable on cloudy and overcast days but give it a blast of sun from dawn to noon, along with some heat and its roots being damp, it smiles at me as I step on to the balcony and almost exudes glee. Best $15 ever spent.
The apricot flowers open red and fade to a soft peach colour. It was only after a few weeks I began to deadhead the flowers and it has looked better since then too.