He is currently in a basic obedience class. Actually, the peeing in the house has gotten better, but not good enough yet. I talked to my trainer and she recommended a crate. Just checking to see what all options I have

Do you think I should keep him in another room at night, or close him in our bedroom? Also, this may be a stupid question, but would it be better to put him in a spare bedroom or buy a gate and keep him in the kitchen? The only thing that makes me nervous about the bedroom is we have a Bowflex in there and I don't want him messing with it. I could probably put a gate up in the living room too.