Oh, yes, now I understand. Excellent storage for instruments! And a very odd feature to have in the middle of a room.
Weird, hey? I'm tempted to say go with it. Get as many indoor plants as you possibly can to cover it up and brighten your days.
Is there any sort of drain hole in the bottom where water from indoor plants could go? If so, then it'd be great as an 'Esky' for indoor parties. Other than that, secret spot for a treats stash? http://www.news.com.au/lifestyle/secret-womens-business-we-find-where-mums-hide-their-chocolate/story-fneszs56-1226786493205