I need some opinions

my boyfriend has to go to Illinois for this week to train at his companies home plant. he gets to stay at a hotel for free and just goes to train from 7am - 330 pm. he wants me to go with him for the week and just hangout with him when he gets back. but the more he thinks about it he's like I want you to come but im worried someone with find out. but no one is going to be checking up on him? And they aren't paying for him to eat while he's there so it's not like I'm gonna be talking money from his company if I go, i would just be staying with him so he isn't lonely. do you think it would be okay? or would it be a bad idea :/ I really want to spend the week with him. UPDATE: my boyfriend decided to bring me and we will be leaving shortly!!! this will be a great opportunity to see if we can handle eachother 5 days in a row haha but thank all you ladies we are very excited!