Hi emmanueln,
Best bet is to search the forum. Even recently a few new users have asked exactly the same question as you.
You seem to have already answered your own question and seeking support in your thoughts.
In a nutshell, You already have some musical background, you do have a musical ear, you have a passion for music and the piano, and you're goals are realistic - Not learning anything technically superior but some pieces you enjoy.
I would definitely recommend anybody at any level to consider a piano teacher as it will certainly do no harm, however finding the right teacher for you can be a big deal depending how in depth you want to learn, eg scales, music theory, piano exams etc.
Most first lessons offered by teachers are usually free, make the most out of finding out their background, their teaching methods, how they can help you, and what you can expect.