Băng chuyền hành lý ở khu nhận hành lý.

Because it is part of two different noun phrases:

• băng chuyền hành lý = baggage carousel / luggage conveyor belt
• khu nhận hành lý = baggage claim area

Vietnamese often repeats the same noun inside different compounds instead of replacing it with a pronoun. So this sounds normal, not repetitive in a bad way.

Not really. In this sentence, ở does the job.

Structure:

• Băng chuyền hành lý = subject
• ở = is at / is located in
• khu nhận hành lý = location

So the sentence works as:

• The baggage carousel is in the baggage claim area.

Vietnamese often does not need a separate verb exactly like English to be.

Here, ở means at, in, or to be located at.

It is very common in Vietnamese for talking about location:

• Tôi ở Hà Nội. = I live/am in Hanoi.
• Nhà vệ sinh ở đâu? = Where is the restroom?

So in your sentence, ở means the baggage carousel is located in that area.

Băng chuyền means conveyor belt.

At an airport, băng chuyền hành lý is the conveyor belt where luggage comes out, so in natural English it is often translated as baggage carousel or luggage belt.

Literally:

• băng = belt/band
• chuyền = to pass along / convey

Together, they form the standard word for a conveyor.

Vietnamese noun phrases are usually head-first.

That means the main noun comes first, and words that describe it come after it.

So:

• băng chuyền hành lý = conveyor belt for luggage
• khu nhận hành lý = area for receiving luggage

This is very common in Vietnamese:

• xe buýt sân bay = airport bus
• phòng chờ hạng thương gia = business-class lounge

English often puts modifiers first, but Vietnamese often puts the main noun first.

Yes, nhận usually means receive, and that is exactly the idea here.

• khu nhận hành lý literally means area for receiving luggage
• In natural airport English, that becomes baggage claim area

So the Vietnamese is more literal than the English airport term. You are not really translating word-for-word; you are matching the usual expression in each language.

You may also hear:

• khu lấy hành lý = area for getting/picking up luggage

Both are understandable.

Not here.

In a general statement or sign, Vietnamese usually does not use a classifier:

• Băng chuyền hành lý ở khu nhận hành lý.

A classifier would be more likely if you were pointing to a specific one:

• Cái băng chuyền này = this conveyor belt
• Một cái băng chuyền = one conveyor belt

So leaving it out here is completely normal.

It sounds natural, especially in an airport context.

Vietnamese often uses short, efficient sentences for directions and locations. This kind of wording is very normal on signs, announcements, maps, or simple explanations.

A slightly fuller version could be:

• Băng chuyền hành lý nằm ở khu nhận hành lý.

Here, nằm ở also means is located in. But your original sentence is already correct and natural.

Here are the tones word by word:

• băng — level tone
• chuyền — falling tone
• hành — falling tone
• lý — rising tone
• ở — dipping/questioning tone
• khu — level tone
• nhận — heavy low tone
• hành — falling tone
• lý — rising tone

A rough rhythm is:

băng chuyền hành lý | ở khu nhận hành lý

If you practice it in two chunks, it will sound more natural:

1. băng chuyền hành lý
2. ở khu nhận hành lý

Not in exactly the same way.

• hành lý = luggage/baggage in general
• va-li = suitcase

So:

• băng chuyền hành lý is correct because the belt carries all baggage, not just suitcases.
• khu nhận hành lý is also standard because the area is for all luggage.

If you say va-li, you are talking about one kind of item, not baggage as a whole.