There's an event space in the Stutz Building (10th and Senate) called Artbox Gallery. I haven't been inside but the pictures look like exactly what you're looking for! http://artboxindy.com/Default.aspx
I know you want something "Studio-ie" but something else to consider (that's a bit more budget friendly) would be the Skyline Club of Indianapolis...they have AMAZING views of the city and are in the One America building on the circle...this is our reception venue
it isnt studio like but it does have a lot of character...THe Omni! they will treat you like a million bucks as the bride as well! Maxie the cordinator is amazing and super friendly!
Re: Downtown Indianapolis Venue with CHARACTER
Indiana Roof Ballroom http://www.indianaroof.com/facility.html
Scottish Rite Cathedral http://www.aasr-indy.org/
I know you want something "Studio-ie" but something else to consider (that's a bit more budget friendly) would be the Skyline Club of Indianapolis...they have AMAZING views of the city and are in the One America building on the circle...this is our reception venue