Tho, I do not mind seeing partners stuff and like to have mine own in sight. It makes me more active - seeing that stuff make me want to interact with it. When I put books and crafting things somewhere I do not see, that project effectively died.
Absolutely, that's basic human psychology. If you want to practice guitar, put the guitar on a stand near your desk/couch where you can see it. Hiding it away just for the sake of 'tidiness' defeats the point.