הדירה שלה נראית מסודרת מאוד, אבל בתוך הארון הכול מבולגן.

In Hebrew, possession with של-forms is usually built like this:

the noun + possessive word

So:

• הדירה שלה = her apartment
• literally: the apartment of hers

The ה־ makes the noun definite. Without it:

• דירה שלה would usually mean an apartment of hers, not specifically her apartment

This is a very common pattern in modern Hebrew:

• הספר שלי = my book
• החבר שלך = your friend
• הבית שלהם = their house

Yes. דירתה also means her apartment.

The difference is mostly style:

• הדירה שלה = the normal, everyday way
• דירתה = more formal, literary, or written

A learner should definitely recognize both, but for everyday speech, הדירה שלה is the safer choice.

Because the subject is הדירה (the apartment), and דירה is a feminine singular noun.

The verb להיראות (to look / to seem / to appear) agrees with the subject in the present tense:

• נראה = masculine singular
• נראית = feminine singular
• נראים = masculine plural
• נראות = feminine plural

So:

• הדירה נראית... = the apartment looks...

If the subject were masculine, you would use נראה:

• החדר נראה מסודר = the room looks tidy

It can match all of those in different contexts. Here, נראית מסודרת מאוד most naturally means:

• looks very tidy
• or seems very tidy

So the sentence suggests an appearance from the outside, not necessarily the full reality. That fits well with the second half of the sentence, which reveals that inside the closet everything is messy.

If the speaker wanted to say simply is very tidy, they could say:

• הדירה שלה מסודרת מאוד

That sounds more direct and factual than נראית מסודרת מאוד.

Because it describes הדירה, and adjectives in Hebrew usually agree with the noun they describe in gender and number.

Since דירה is feminine singular, the adjective is also feminine singular:

• מסודר = masculine singular
• מסודרת = feminine singular
• מסודרים = masculine plural
• מסודרות = feminine plural

So:

• דירה מסודרת = a tidy apartment
• חדר מסודר = a tidy room

That is just the normal Hebrew word order.

Hebrew usually puts מאוד (very) after the adjective or adverb:

• יפה מאוד = very beautiful
• גדול מאוד = very big
• מסודרת מאוד = very tidy

So although English says very tidy, Hebrew says the equivalent of tidy very.

Yes, it could say בארון, but בתוך הארון is more specific.

• בארון = in the closet / in the cabinet
• בתוך הארון = inside the closet / inside the cabinet

So בתוך adds emphasis to the idea of being inside.

This makes the contrast stronger:

• the apartment looks tidy,
• but inside the closet everything is messy.

Because בתוך is a separate word, not a one-letter preposition like ב־.

Compare:

• ב + הארון = בארון
  because ב־ attaches directly to the noun

But:

• בתוך הארון stays two words
  because בתוך is its own full preposition-like word meaning inside

So the ה־ of הארון remains visible.

They mean the same thing here: everything or all of it.

• הכול is the standard full spelling in modern Hebrew
• הכל is also very common

In this sentence:

• הכול מבולגן = everything is messy

So there is no difference in meaning here.

In Hebrew, הכול is treated grammatically as singular, and it usually takes masculine singular agreement.

So:

• הכול מבולגן = everything is messy

not:

• הכול מבולגנים
• הכול מבולגנת

This is similar to English, where we also say everything is, not everything are.

Because Hebrew normally omits the verb to be in the present tense.

So in present-time sentences, Hebrew often just puts the subject next to the adjective or noun:

• הכול מבולגן = everything is messy
• הדירה גדולה = the apartment is big
• הוא עייף = he is tired

But in past or future, Hebrew does use forms of to be:

• הכול היה מבולגן = everything was messy
• הכול יהיה מבולגן = everything will be messy

ארון is a general word for a storage unit like a closet, cabinet, cupboard, or wardrobe, depending on context.

So בתוך הארון could be understood in different ways depending on the situation:

• inside the closet
• inside the cabinet
• inside the wardrobe

If the sentence is about an apartment being tidy on the surface but messy in hidden places, closet is a very natural translation.