A senhora pode trocar o lençol deste quarto, por favor?

A senhora is a formal and respectful way to say you when speaking to an older woman or in a polite service situation.

In Brazilian Portuguese:

• você = neutral/common you
• a senhora = more formal/polite you for a woman
• o senhor = more formal/polite you for a man

So this sentence sounds especially polite, which fits situations like speaking to hotel staff, a housekeeper, or an older woman.

Because a senhora takes third-person singular verb forms, not second-person forms.

So:

• você pode
• a senhora pode
• o senhor pode

Even though a senhora means you, grammatically it behaves like she.

That is very common in Portuguese with:

• você
• o senhor
• a senhora

Trocar usually means to change, to swap, or to replace.

In this sentence, trocar o lençol means:

• change the bedsheet
• replace the sheet with a clean one

It is a very natural verb here. In hotel or housekeeping contexts, trocar is often used for changing sheets, towels, etc.

Examples:

• Trocar a toalha = to change the towel
• Trocar os lençóis = to change the sheets

Portuguese often uses the singular where English might prefer the plural, depending on context.

O lençol means the sheet or the bedsheet. In real usage, people may also say:

• os lençóis = the sheets

Both can make sense, but the singular is not strange if the speaker is referring to the bedding in a general or practical way.

If you want to be more explicit, you could say:

• A senhora pode trocar os lençóis deste quarto, por favor?

That would mean Can you change the sheets in this room, please?

Lençol means sheet, especially a bedsheet.

Useful related words:

• lençol = sheet
• lençóis = sheets
• fronha = pillowcase
• cobertor = blanket
• edredom = comforter/duvet

Also note the spelling:

• ç is called cedilha
• in lençol, it makes an s sound

So lençol is pronounced roughly like len-SOL.

Deste means of this and desse means of that.

So:

• deste quarto = of this room
• desse quarto = of that room

If the speaker is in the room or referring to the room they are currently in, deste quarto is logical.

In everyday Brazilian Portuguese, though, many speakers do not always keep a strict distinction between este and esse, and desse quarto may also be heard in conversation. But deste quarto is correct and clear here.

Deste is a contraction:

• de
  • este = deste

Other similar contractions:

• de
  • esta = desta
• de
  • esse = desse
• de
  • essa = dessa
• de
  • isso = disso

So deste quarto literally means of this room.

Portuguese uses definite articles (o, a, os, as) more often than English does.

So trocar o lençol is natural Portuguese:

• trocar o lençol
• literally: change the sheet

English might say:

• change the sheet
• change sheets
• change the bedding

But in Portuguese, keeping the article is very normal.

Yes. That is completely natural.

Portuguese often omits the subject pronoun or noun when it is understood from context.

So both are possible:

• A senhora pode trocar o lençol deste quarto, por favor?
• Pode trocar o lençol deste quarto, por favor?

The version without a senhora can still be polite, especially because of por favor and the context.

Adding a senhora makes the politeness and formality more explicit.

Yes. In Portuguese, yes/no questions are often formed just by intonation and context, not by changing word order.

So:

• A senhora pode trocar o lençol deste quarto. = statement
• A senhora pode trocar o lençol deste quarto? = question

The word order stays the same.

This is different from English, where we usually invert:

• You can...
• Can you...?

Portuguese normally does not need that inversion.

Yes, often it would.

Compare:

• A senhora pode trocar o lençol deste quarto, por favor? = polite
• A senhora poderia trocar o lençol deste quarto, por favor? = even softer / more polite

Poderia is like could in English and often sounds more indirect.

Both are correct.
If you want to sound especially courteous, poderia is a great choice.

Por favor is flexible.

These all work:

• A senhora pode trocar o lençol deste quarto, por favor?
• Por favor, a senhora pode trocar o lençol deste quarto?
• A senhora, por favor, pode trocar o lençol deste quarto?

The most common and natural placement is often at the end:

• ..., por favor?

That is simple and polite.

It is very common and helpful, but punctuation in this kind of sentence can vary.

Writing:

• A senhora pode trocar o lençol deste quarto, por favor?

is standard and natural.

The comma marks por favor as a polite insert. In informal writing, some people might omit it, but using it is a good idea.

Yes, if the situation is not especially formal.

For example:

• Você pode trocar o lençol deste quarto, por favor?

This is grammatically correct and very common in Brazil.
However, it is less formal than a senhora.

Use a senhora if:

• you want to sound more respectful
• you are speaking to an older woman
• the context is formal or service-oriented

Use você if:

• the situation is casual
• formality is not important

Usually trocar is the better verb here.

• trocar = change/replace/swap
• mudar = change, but often in the sense of become different, move, or alter

For physical replacement of an item like a sheet or towel, trocar sounds more natural:

• trocar o lençol
• trocar a toalha

Using mudar here would sound less natural.

Quarto is pronounced roughly like KWAR-too in Brazilian Portuguese.

A few points:

• qua sounds like kwa
• the r in the middle is softer than English h
• the final o is often pronounced like a light oo sound in Brazilian speech

So:

• quarto ≈ KWAR-too

It means room here, though in other contexts it can also mean fourth.

It can mean both, depending on context.

Common meanings:

• quarto = bedroom
• quarto de hotel = hotel room

In this sentence, deste quarto clearly means of this room, probably a hotel room or guest room.

So the context decides the best English translation.

Yes. It is correct, polite, and natural.

That said, in real life, Brazilians might also say things like:

• A senhora pode trocar o lençol desse quarto, por favor?
• Pode trocar os lençóis deste quarto, por favor?
• A senhora poderia trocar o lençol deste quarto, por favor?

All of these are natural variations. The original sentence is perfectly good Brazilian Portuguese.