الجناح بالطابق التاني.

Because Levantine Arabic often leaves out the present-tense verb to be.

So الجناح بالطابق التاني literally looks like the suite/wing on the second floor, but it naturally means the suite/wing is on the second floor.

This is very normal in Arabic. If you wanted was, you would use a verb such as كان.

Here بـ means something like in / on / at, depending on the context.

So:

• بالطابق = in the floor literally
• but in natural English, we say on the floor

This is a good reminder that Arabic and English prepositions do not match word-for-word. In Levantine, بـ is very commonly used for location.

Because in Arabic, adjectives usually come after the noun they describe.

So:

• الطابق = the floor
• التاني = the second

Literally: the floor the second

That is the normal Arabic order.

Because Arabic adjectives agree with the nouns they describe in definiteness.

So if the noun is definite:

• الطابق = the floor

then the adjective also has to be definite:

• التاني = the second

Together, الطابق التاني means the second floor.

If you leave off الـ, the phrase becomes less definite and can change the meaning.

التاني is the common colloquial Levantine form.

الثاني is the Modern Standard Arabic form, or a more formal style.

So:

• Levantine everyday speech: التاني
• Modern Standard Arabic: الثاني

Also, in Levantine, تاني can sometimes mean second, another, or even again, depending on context. In الطابق التاني, it clearly means second.

It is not always pronounced the same way.

In الجناح, the ل is pronounced normally, because ج is not a sun letter.

But in:

• الطابق
• التاني

the ل of الـ is absorbed into the next consonant, because ط and ت are sun letters.

So you hear something like:

• الجناح → el-jnaah or il-jnaah
• الطابق → eṭ-ṭaabeʔ / iṭ-ṭaabeʔ
• التاني → et-taani / it-taani

So the whole sentence may sound roughly like:

el-jnaah biṭ-ṭaabeʔ et-taani

Exact vowels vary by region.

A broad Levantine-style pronunciation is:

el-jnaah or il-jnaah

A few things may feel unusual for an English speaker:

• The word often starts with a cluster like jn-
• The final ح is a strong breathy consonant, not the English h
• Depending on the region, ج may sound like English j, or sometimes more like the zh sound in measure

So you may hear something close to:

• el-jnaah
• or in some accents, something closer to el-zhnaah

It depends on context.

جناح can mean:

• suite, especially in a hotel
• wing, especially in a building, hospital, airport, museum, etc.

So the sentence could mean:

• The suite is on the second floor
• or The wing is on the second floor

The situation tells you which one is meant.

Yes, في الطابق التاني is understandable and natural too.

A common more formal version would be:

الجناح في الطابق التاني

But in Levantine speech, using بـ for location is very common, so الجناح بالطابق التاني sounds natural and colloquial.

A common Modern Standard Arabic version would be:

الجناح في الطابق الثاني

The main differences are:

• في instead of بـ is more standard/formal
• الثاني instead of التاني is the formal word for second

So:

• Levantine: الجناح بالطابق التاني
• MSA: الجناح في الطابق الثاني

Both mean the same thing, but the Levantine one sounds more like everyday speech.