Question

Decide if the following sentence is grammatically correct or incorrect. Mi hermano siempre tiene su cuarto limpio él es una persona muy limpia.

Answer 1

I believe the grammar is correct. If not I'm sorry

Answer 2

Well, it does seem correct - the tenses are used correctly, the articles agree with the pronouns/nouns in the sentence, so I think it is good.
There is only one thing, but I don't know if that is a typo or what - there should be a period between limpio and él because those are two separate sentences.