madogawa no seki wo oisimasu.

It is read:

まどがわ の せき を おねがいします

A few pronunciation notes:

• 窓側 = まどがわ
  • 側 often becomes がわ in compounds like this.
• 席 = せき
• お願いします = おねがいします

So the whole sentence sounds like:

madogawa no seki o onegaishimasu

窓側 means the window side.

• 窓 = window
• 側 = side

So 窓側の席 is literally a seat on the window side.

In natural English, you would usually say a window seat, but Japanese builds it more literally.

Here, の connects two nouns.

• 窓側 = window side
• 席 = seat
• 窓側の席 = window-side seat / seat on the window side

This is a very common pattern in Japanese:

noun 1 + の + noun 2

where noun 1 describes noun 2.

Examples:

• 日本の会社 = a Japanese company / a company in Japan
• 駅の近く = near the station
• 窓側の席 = a seat by the window

So の is functioning a bit like of, 's, or an adjective-like connector, depending on the context.

を marks the thing being requested.

So in:

窓側の席をお願いします

the thing you are asking for is:

窓側の席 = the window-side seat / a window seat

A very common pattern is:

X を お願いします

which means:

• X, please
• I’d like X, please
• Please give me X

So を is showing what the request is about.

お願いします literally comes from 願う, meaning to wish or to request.

In this sentence, お願いします is a polite request expression. It often translates naturally as:

• please
• I’d like ...
• could I have ...

So 窓側の席をお願いします is not a word-for-word equivalent of English please, but that is the natural effect it has here.

It is one of the most useful polite expressions in Japanese.

Both can be used to ask for something, but they are not always identical.

• X を お願いします sounds like I’d like X, please or X, please
• X を ください sounds more directly like please give me X

With service situations such as restaurants, counters, tickets, or seating requests, お願いします is extremely common and sounds smooth and polite.

So 窓側の席をお願いします is very natural.

You may also hear:

• 窓側の席をください

This is understandable, but お願いします is often the more standard choice in this kind of request.

Yes. Japanese very often leaves out the subject when it is obvious from context.

In English, you might say:

• I would like a window seat, please.

In Japanese, the I is usually omitted because the situation already makes it clear that you are the one making the request.

So the sentence is complete and natural without saying 私は.

This is extremely common in Japanese conversation.

Yes, in conversation people often shorten it a little.

For example:

• 窓側の席、お願いします。

This is very natural in speech. The を is omitted, but the meaning is still clear.

You could also hear:

• 窓側でお願いします。

This means something like Window side, please and is also very natural when the context is clearly about seats.

So the full version is polite and clear, but shorter versions are common too.

席 means seat in the sense of a place to sit.

椅子 means chair, the physical object.

So in a restaurant, train, airplane, or waiting area, 席 is the right word because you are asking for a seating position or location, not for a piece of furniture.

That is why 窓側の席 is correct, not 窓側の椅子.

Yes, you can, but there is a nuance difference.

• 窓側 = the window side
• 窓際 = right by the window

In many situations, they are very close in meaning, and both can refer to a window seat.

However:

• 窓側 is especially common when contrasting with 通路側 (aisle side), such as on planes or trains.
• 窓際 can feel a little more like next to the window itself.

So for travel or seating choices, 窓側の席 is a very standard and useful phrase.

It is polite and appropriate in normal everyday service situations.

You can use it with:

• restaurant staff
• airline staff
• train staff
• reception staff
• clerks at a counter

It is polite without sounding stiff or overly formal.

If you wanted to be a little softer, you could say:

• 窓側の席をお願いします。
• 窓側の席でお願いします。

Both are polite and natural.

The common opposite is 通路側の席:

• 通路 = aisle
• 通路側 = aisle side

So:

• 通路側の席をお願いします。 = I’d like an aisle seat, please.

This is useful because 窓側 and 通路側 are often used as a pair.