Should I become an intern after graduating a bit ago?

Hello HN! So I received a startup intern offer for user research/product in Europe. I'm not sure if I should take it? My dilemma here is: will an internship achieve my goal which is to expedite my skill building within my field of interest? A little context: My goal is to become a good UX researcher. I graduated 2 years ago so I’m really looking to sharpen my skills and understand the easiest way, imo, is to work under a more experienced researcher/mentor. I've worked in consulting/various ux research environments, but this would be my first real startup. But from this role, I would given a high level of autonomy and from my understanding the first dedicated intern for this type of role. These aren’t terrible things depending on what you want, but I want to pick up best practices or at least have an idea before I tread out into the "real" world myself. You never know what you don’t know right? The people seem great though and the startup is doing well. I’m sure I’ll still learn a lot at this startup, but vs to learning directly under a more experienced researcher in a similar environment… I’m thinking the later would be optimal? The only thing is I just have to find it,haha! It's just for 5 months so it's not the end of the world. It could also be a great opportunity to really challenge myself as it could be a "training" ground + I get to travel to europe (From north america,haha!). So, I’d love to get your opinion if I’m thinking about this correctly!