Is the word confortável the same in Brazilian and European Portuguese?

Yes

The spelling, meaning, and grammatical usage of "confortável" are identical in both Brazilian and Continental Portuguese. The only difference is pronunciation.

In Brazilian Portuguese, the vowels are generally more open and clearly articulated, and the rhythm of speech is "syllable-timed" (each syllable receives roughly equal weight). In Continental Portuguese, unstressed vowels are often reduced or "swallowed," and the rhythm is "stress-timed," which makes the word sound more clipped or closed to a Brazilian ear.

Brazilian Portuguese Examples

1. Este sofá é muito confortável. (This sofa is very comfortable.)
2. Eu gosto de usar roupas confortáveis. (I like to wear comfortable clothes.)
3. O hotel era super confortável. (The hotel was super comfortable.)
4. Não estou confortável com essa situação. (I am not comfortable with this situation.)
5. Achei esse tênis muito confortável. (I found these sneakers very comfortable.)

Continental Portuguese Examples

1. Este sofá é muito confortável. (This sofa is very comfortable.)
2. Usa roupa confortável para a viagem. (Use comfortable clothes for the trip.)
3. O quarto do hotel era muito confortável. (The hotel room was very comfortable.)
4. Não me sinto confortável com esta situação. (I don't feel comfortable with this situation.)
5. Estas sapatilhas são muito confortáveis. (These sneakers/plimsolls are very comfortable.)