What a lovely front porch..so much potential. There are so many ways you could go based on how you think you will use the porch and your style. If you go on Pinterest and search front porches, you'll see a ton of ideas. Consider your needs and then the style you most prefer.

Kelly is correct! Now instead put some painted wood rockers, a small old table, painted to contrast with rockers and blend with your wonderful house design. Add a large fern in the corner in a tall pot that is similar to the chair color. Look for a large object that could hang on the bare wall. (could even be an antique stained glass window, preferably in Craftsman Style)

Looks like the sofa has a good frame. You could paint it to match the rocker chairs and add outdoor cushions to replace the ones on it now. Or you could put cushions on each end of the sofa and add plywood platform in the middle to be used as a table. Center it between the door wall and the porch railing. You could even take the legs off and make it a porch swing. I like re-purposed furniture. It adds interest to any setting.

Hang plants in the opening behind the sofa. Radical ideas, I know.