While it's not the largest of the mid-size sedans--or as big as the Honda Accord, which is EPA-classified as a large car--the 2012 Nissan Altima has a functionally fine cabin and competitive trunk space, at least in sedan form.
The gimmick-free Altima interior is a little drab, what with the mix of plastics across the dash, the center stack and the door panels. But the front passengers should find enough head and leg room in the sedan, at least. The coupe version cuts down on those measurements significantly; opt for a sunroof in the two-door, and taller drivers will struggle to sit upright and still clear the headliner.
Even as a sedan, the Altima could prove tight for taller adults in the back seat, though leg and shoulder room are competitive. Trunk space is plentiful, too, with split-folding rear seats that don't fold quite flat, but make more space available for cargo. Coupes, as you can expect, give up lots of useful space for that distinctive look, and head room is scarce in back. So are entry and exit.
In-car storage is fine--the glovebox is huge, and the center console is usefully deep. On either the sedan or coupe, the Altima has nicely laid out controls with a bit of sportscar dash in their look, with just a bit of inexpensive feel to them and to the plastic trim.