Should I go into Sustainability?

I am choosing between 2 internship opportunities, one of which is in CSR/ESG in an asset management division of a big bank. I'm a bit knew to this field, and I'd appreciate your advice: do you think this opportunity would be a good career move in long term?

I am a business major with background in social and political sciences.

The inthernship focus is mostly CSR and ESG communications (internal, to clients and some public), including reporting (CSRD, EU Taxonomy, some other frameworks).

The role sounds interesting to me, but I'm afraid to be stuck in communications without any hard skills, which will make it difficult to find a job after.

What do you think about the prospects with such an experience? How difficult will it be to find/change a job?

Also, in mid-term, I want to have work-life balance (8h of work per day max) and flexible remote working policy while maintaining good pay. It seems unrealistic in the financial sector. What types of roles in sustainability do you think might be closer to this lifestyle?

I have another opportunity in data analytics at a much smaller company, so I'm wondering if I should take the practical approach.

I'm located in the EU in case if it's important.