Người thuê nhà đang ở trong căn hộ.

Literally, người thuê nhà breaks down like this:

• người = person
• thuê = rent, hire
• nhà = house, home

So the literal sense is the person who rents a home/place. In natural English, that is usually tenant or renter.

In Vietnamese, phrases like this are very common:
người + verb = person who does something

For example:

• người học = learner/student
• người bán = seller
• người thuê nhà = tenant

Thuê nhà by itself means to rent a house/home or renting a place. It describes an action, not a person.

Adding người turns that action into the person who does it:

• thuê nhà = rent a place
• người thuê nhà = the person who rents a place

So người is important here because it tells you this is a person, not just an action.

Đang marks an action or state as in progress right now. It is often like English be + -ing.

So:

• ở = live / stay / be at
• đang ở = is living / is staying / is currently in

In this sentence, đang emphasizes that the tenant is currently in the apartment.

Compare:

• Người thuê nhà ở trong căn hộ. = The tenant lives/is in the apartment.
  This can sound more general or neutral.
• Người thuê nhà đang ở trong căn hộ. = The tenant is currently in / is currently staying in the apartment.
  This focuses on the ongoing situation now.

Ở is a very common Vietnamese word with meanings such as:

• to live
• to stay
• to be located at / be in

In this sentence, it can be understood as is in, is staying in, or is living in, depending on context.

That is why ở can be a little tricky for English speakers: one Vietnamese word covers several ideas that English often separates.

It can feel repetitive from an English point of view, but it is normal in Vietnamese.

• ở tells you the person is located / staying / living
• trong tells you the location is inside something

So:

• ở trong căn hộ = be/stay/live inside the apartment

You can think of it as:

• ở = the state of being somewhere
• trong căn hộ = the place, specifically inside the apartment

In casual speech, sometimes trong may be omitted if the meaning is already clear, but ở trong is perfectly natural.

Căn hộ means apartment or flat, usually a unit inside a larger building.

Nhà is broader. It can mean:

• house
• home
• dwelling/place to live

So in this sentence:

• người thuê nhà = tenant / renter
  Here nhà is part of the set phrase for someone who rents a place to live.
• căn hộ = apartment
  This gives the specific type of place.

So the sentence is not contradictory. It is saying that the tenant is in an apartment.

The basic order is:

• Người thuê nhà = subject
• đang ở = verb phrase
• trong căn hộ = location

So the pattern is basically:

Subject + đang + verb + location

Very literally:

Tenant + currently + is/stays/lives + in the apartment

This is a common Vietnamese sentence structure.

Vietnamese does not use articles the same way English does. There is no direct, automatic equivalent of a/an/the in every sentence.

So:

• người thuê nhà can mean a tenant, the tenant, or tenants, depending on context
• căn hộ can mean an apartment or the apartment, depending on context

The exact meaning usually comes from the situation, previous conversation, or extra words if needed.

If the meaning shown to the learner is the tenant is in the apartment, that is a perfectly reasonable English translation.

Yes. Vietnamese nouns usually do not change form for singular vs. plural the way English does.

So người thuê nhà could mean:

• the tenant
• a tenant
• tenants

Context tells you which one is intended.

If Vietnamese wants to be clearer about plurality, it can add words such as:

• những người thuê nhà = tenants
• các người thuê nhà = the tenants / tenants

But without those, the phrase is number-neutral.

It could mean either, depending on context.

Because ở is flexible, the sentence may suggest:

• is living in the apartment
• is staying in the apartment
• is in the apartment right now

Also, đang makes it feel more like a current situation, so in many contexts the most natural English translation could be:

• The tenant is in the apartment right now
• The tenant is currently staying in the apartment

If the broader context is about residence, then is living in the apartment also works.

Yes, it is natural.

A few close alternatives are:

• Người thuê nhà đang ở căn hộ.
• Người thuê đang ở trong căn hộ.
• Người thuê nhà hiện đang ở trong căn hộ.
  (hiện / hiện đang adds an even stronger sense of currently)

Each version is slightly different in tone or emphasis, but your original sentence is completely normal.

A learner might especially want to watch these words:

• người — the vowel is tricky for English speakers
• thuê
• nhà
• đang
• ở
• trong
• căn hộ

Tone is very important in Vietnamese because changing the tone can change the word.

A rough guide:

• người = rising-type contour
• thuê = level
• nhà = low falling
• đang = level
• ở = broken/glottalized rising
• trong = level
• căn = level
• hộ = heavy, low/glottalized

Even if your grammar is correct, wrong tones can make you hard to understand, so it is worth learning the pronunciation of the whole sentence as a chunk.

Because ở itself already works as the main verb here.

In English, you say:

• The tenant is in the apartment.

In Vietnamese, you do not need a separate word meaning is in this kind of sentence. The main idea is expressed directly by ở:

• Người thuê nhà đang ở trong căn hộ.

So instead of thinking đang + is + in, it is better to think:

• đang ở = is currently located / staying / living

That is a very common difference between English and Vietnamese.