I'm so charmed by your space! Before you demolish the trough, what about keeping it as a planter, agua feature, or fuego pit? I kind of love that it's there.

Now what is that thing next to it? I'm picturing it having formerly been a shrine with a religious statue in it. I think it's an opportunity to be used as a pedestal for a special garden sculpture of your choice a tall sitting greyhound perhaps, with an ivy backdrop to echo your ivy arch. The armiture wouldn't have to stay blue if azul's not your thing. Oh, and I just noticed -- you'd have to re-home the pollo vane and use a finial instead, I think.

Look for regionally appropriate flowering shrubs, herbs and ground cover. A little work here and you'll have an amazing spot to enjoy your candle lit evening sangria and sheep's milk queso, con tapas.