Thank you for everyone's suggestions. We will try him upstairs, we just don't have a large bedroom so trying to fit the crate in will be a struggle. @Zande yes it's quite big for him, we wanted to ensure he can fully move without discomfort.
Also, @Zande you're correct, we have been looking for quite a while but we're lucky enough to find this little guy. We've named him Loki and we definitely feel it suits his mischievous side haha.