Puppy peed on rug for attention and sleep question?

My dog is house trained so let's get that clear and don't start a silly argument about it please.. I was on my computer doing some work my mom was on the computer on Facebook and my dad was watching TV.. Out of nowhere my dog who has been doing nothing and just chilling comes into my moms computer room and pees on the rug but not Alot,.. I immediately took him outside and he peed again so I feel it was an attention grabber or HEY IM OVER HERE.. I forgot to mention he is only 7 months old... We are thinking about him staying with us when we are home but when we want to sleep to have him sleep in his crate downstairs because it is where he will feel safe he used to sleep in my mom and dads room but my mom says it's difficult for him to go down the steps in the morning to pee so the crate downstairs is best much easier and we will bring him up first thing in the morning