Durante o passeio, a guia sugeriu um restaurante tranquilo perto do museu.

Durante means during, so Durante o passeio means during the outing / during the tour / during the walk.

• durante focuses on something happening in the course of an event
• no passeio literally means in/on the outing, and can sometimes work depending on context, but durante is more clearly about when the action happened

So here, Durante o passeio is a natural way to set the scene in time.

Passeio is a very common Portuguese word that can mean:

• walk
• outing
• stroll
• tour
• trip in a light, casual sense

In this sentence, the exact English translation depends on context. If a guide is involved, passeio could easily mean:

• a tour
• an outing
• a guided visit

So the word is broader than one single English equivalent.

Because guia here refers to a female guide.

In Portuguese, job titles often change article according to the person’s gender:

• o guia = the male guide
• a guia = the female guide

The noun guia itself often stays the same in form, and the article shows the gender.

So:

• a guia sugeriu = the guide (woman) suggested

Sugeriu is the preterite form of sugerir.

It means suggested in the sense of a completed past action:

• A guia sugeriu... = The guide suggested...

This is the standard tense in Brazilian Portuguese for a single finished event in the past.

A few forms of sugerir:

• eu sugiro = I suggest
• ela sugeriu = she suggested
• ela sugeria = she used to suggest / was suggesting

So sugeriu tells you the suggestion happened at that moment in the past.

Often yes, but there are some differences in usage.

In this sentence:

• A guia sugeriu um restaurante = The guide suggested a restaurant

That works very similarly to English.

But with clauses, Portuguese often uses different patterns, for example:

• Ela sugeriu que fôssemos cedo. = She suggested that we go early.

So yes, the basic meaning matches English well, but the grammar after it can vary depending on what follows.

Because tranquilo agrees with restaurante, and restaurante is masculine.

In Portuguese, adjectives usually agree in gender and number with the noun:

• um restaurante tranquilo = a calm/quiet restaurant
• uma praça tranquila = a calm/quiet square

So:

• restaurante = masculine singular
• therefore tranquilo = masculine singular

Here tranquilo most naturally means:

• quiet
• calm
• peaceful

For a restaurant, it suggests a place that is not noisy, hectic, or chaotic.

In Brazilian Portuguese, tranquilo is a very common word and can also mean things like:

• calm
• relaxed
• easy
• okay / all good

But in this sentence, it is describing the atmosphere of the restaurant.

Because perto normally uses the preposition de.

So the structure is:

• perto de = near

Then de + o contracts into do:

• perto de o museu → perto do museu

This contraction is required in standard Portuguese.

Other examples:

• perto da praça = near the square
• perto dos hotéis = near the hotels
• perto das lojas = near the stores

Portuguese uses definite articles much more often than English.

Here, do museu literally means of the museum, but with perto de, the natural English translation is near the museum.

Portuguese commonly uses articles with nouns like places and professions where English may or may not. In this sentence, o museu is simply the normal way to say the museum.

So:

• perto do museu = near the museum

This is completely standard.

Yes. Perto do museu describes the location of the restaurant.

The phrase breaks down like this:

• um restaurante = a restaurant
• tranquilo = quiet/calm
• perto do museu = near the museum

So the guide suggested:

• a quiet restaurant near the museum

Portuguese often places descriptive information after the noun, just like English sometimes does:

• the restaurant near the museum
• o restaurante perto do museu

Grammatically, yes, but it would sound less neutral and less common here.

The normal order is:

• um restaurante tranquilo

Putting the adjective before the noun in Portuguese can sound:

• more literary
• more stylistic
• more subjective or emphatic

So for everyday speech, um restaurante tranquilo is the natural choice.

Because Durante o passeio is an introductory time phrase.

The comma helps separate the setting from the main clause:

• Durante o passeio, a guia sugeriu...

In Portuguese, this comma is very common and natural. It works much like in English with an opening phrase such as:

• During the tour, the guide suggested...

Sometimes short introductory phrases may appear without a comma, but here the comma is standard and clear.

Yes, this sentence sounds natural and correct.

It is a bit neat and textbook-like, but absolutely normal. In speech, Brazilians might also say variations such as:

• Durante o passeio, a guia indicou um restaurante tranquilo perto do museu.
• No passeio, a guia sugeriu um restaurante bem tranquilo perto do museu.
• A guia sugeriu um restaurante tranquilo perto do museu durante o passeio.

A few notes:

• sugeriu is natural
• indicou can also be very common for recommending a place
• bem tranquilo sounds a little more conversational

So the original sentence is correct, natural, and useful to learn.