Nós vamos de metrô porque a estação fica perto do apartamento.

Yes. In Portuguese, the verb form vamos already tells you the subject is we, so nós can be omitted.

• Nós vamos de metrô...
• Vamos de metrô...

Both are correct.

Including nós can add clarity, emphasis, or contrast. In everyday Brazilian Portuguese, people also very often say A gente vai de metrô..., which is more common in conversation than Nós vamos....

Vamos is the present tense of ir (to go), but in Portuguese, the present tense is often used to talk about a near future action, especially when the context makes it clear.

So Nós vamos de metrô can mean:

• We go by subway
• We’re going by subway
• We will go by subway

In normal conversation, this is very natural.

With means of transportation, Portuguese often uses de.

• de metrô = by subway
• de ônibus = by bus
• de carro = by car
• de avião = by plane

If you say no metrô, that usually means in/on the subway, referring to location rather than means of transport.

Compare:

• Vamos de metrô. = We’re going by subway.
• Estamos no metrô. = We are on the subway / in the subway.

Here, porque means because.

The sentence structure is:

• Nós vamos de metrô = We’re going by subway
• porque a estação fica perto do apartamento = because the station is near the apartment

This is the standard spelling for because in a statement.

Learners often confuse these forms:

• porque = because
• por que = why / for what reason
• porquê = the reason
• por quê = why, usually at the end of a question

In your sentence, porque is the correct form.

In Brazilian Portuguese, ficar is very commonly used to talk about where something is located.

So:

• A estação fica perto do apartamento. = The station is located near the apartment.

This sounds very natural.

You may also hear está in some contexts, but fica is especially common for describing location, especially a more permanent or usual location.

Compare:

• Onde fica a estação? = Where is the station?
• A estação fica perto daqui. = The station is near here.

So in this sentence, fica is not becomes; it means something like is situated.

Estação is a feminine noun, so it takes the feminine singular article a.

• a estação = the station

In Portuguese, nouns have grammatical gender, and articles must match:

• o apartamento = the apartment
• a estação = the station

You usually need to learn the noun together with its article.

Because de + o contracts into do.

So:

• de + o = do
• de + a = da
• de + os = dos
• de + as = das

That is why:

• perto do apartamento = near the apartment

not

• perto de o apartamento

This contraction is mandatory in normal Portuguese.

It means near the apartment or close to the apartment.

The key part is:

• perto de = near / close to

Because de + o apartamento becomes do apartamento, you get:

• perto do apartamento

You can think of it as:

• perto de
  • o apartamento
• perto do apartamento

Yes. Próximo do apartamento also means near the apartment and is correct.

Compare:

• A estação fica perto do apartamento.
• A estação fica próximo do apartamento.

Both are natural. Perto is very common and simple, so it is often the first version learners see.

You may also hear:

• próxima ao apartamento

because estação is feminine, so the adjective agrees:

• próxima

Estação is roughly pronounced es-ta-SOWN, but with a nasal ending.

A few pronunciation points:

• The stress is on the last syllable: -ção
• ç sounds like s
• ão is a very common Portuguese nasal sound

So estação is not pronounced like an English station. The ending is much more nasal.

Also:

• metrô has stress on the last syllable because of the accent: me-TROH
• nós has an open ó sound

The original order is very natural:

• Nós vamos de metrô porque a estação fica perto do apartamento.

But Portuguese allows some flexibility. For example:

• Porque a estação fica perto do apartamento, nós vamos de metrô.

This also works, especially if you want to emphasize the reason first.

Still, the original version sounds very normal and straightforward for everyday speech.

Both are correct, but in everyday Brazilian Portuguese, a gente vai is often more common in casual speech.

So you may hear:

• Nós vamos de metrô...
• A gente vai de metrô...

Both mean we go / we’re going by subway.

Important difference:

• nós uses the we verb form: vamos
• a gente takes the he/she/it verb form: vai

So:

• Nós vamos
• A gente vai

If you want to sound natural in conversation, a gente vai is very useful to learn.

Yes. That is a very natural English translation.

Ir de metrô literally means to go by subway, but in natural English, depending on context, it can also be:

• We’re going by subway
• We’re taking the subway
• We’ll go by subway

All of these fit the Portuguese sentence well.