Looking for advice on planting a climber along my patio next to the house. I have vinyl siding and I know it's a bad idea to let the climber grow directly on the house. What I'm considering is attaching a wood or metal trellis - possibly with some spacers between the siding and trellis?

Is this just a bad idea in general? If giving a little space between the house and trellis helps, how much is sufficient? I have less than a foot between the side of the house and the patio. Any other advice or ideas are appreciated. Basically I'm trying to create a green, shady space around the entire patio so I'd like something vertical right along the side of the house.

In terms of specific plants I was considering climbing hydrangea. I live in central Ohio and it would be in partial shade most of the day.