So the guy you met finally brings you back to his place.
What things do notice?
Clean? Dirty? Organized? A mess? Does he dust?
Most Helpful Girl
I notice whether it is a disaster zone, or relatively neat (and I'm very good at guessing whether it was one of those "omg! Girl coming over" try to shove things out of sight or more of a lifestyle. I guess my goal is to have an idea whether I actually want to know whether his standards are about the same as mine - it will make both of us more comfortable in each others places, if we are.
Secondly, I notice the style/decorative items/anything that gives hints about his lifestyle/sport interests/past/family photos etc. Goal for that is probably just getting to know him better and (well maybe not the first time, but eventually) help me know what sort of things he might find cool or could use in his apt in case I ever need to buy presents down the line.