kono mati ha heiwa desu.

It is read:

この まち は へいわ です。
Kono machi wa heiwa desu.

A few pronunciation notes:

• 町 here is read まち.
• The particle は is written ha but pronounced wa when it marks the topic.
• です is often pronounced softly, closer to des in everyday speech.

この means this, but it must come before a noun.

So:

• この 町 = this town
• これ = this (used by itself)

Compare:

• この町は平和です。 = This town is peaceful.
• これは町です。 = This is a town.

So この cannot stand alone; it needs a noun after it.

The は is the topic marker. It tells you what the sentence is talking about.

So この町は means something like:

• As for this town, ...
• Speaking of this town, ...

Then the rest of the sentence says something about that topic:

• 平和です = is peaceful

So the structure is:

• この町 = this town
• は = topic marker
• 平和です = is peaceful

This is a special feature of a few Japanese particles.

When は is used as a particle, it is pronounced wa, not ha.

So:

• 町は is read machi wa

This is just a standard spelling rule in Japanese. The same thing happens in many sentences, such as:

• 私は学生です。 → watashi wa gakusei desu

This is a very common question.

In this sentence, は presents この町 as the topic:
As for this town, it is peaceful.

If you used が instead, the nuance would change. が often marks the subject more directly and can sound more like identifying or emphasizing it.

Compare:

• この町は平和です。
  As for this town, it is peaceful.
• この町が平和です。
  This town is the peaceful one / It is this town that is peaceful (depending on context)

So は is the more natural choice for a simple neutral statement about a topic.

平和 is commonly treated as a na-adjective word in Japanese, and it can also behave noun-like in some situations.

Here, in 平和です, it works as the predicate of the sentence:

• 平和です = is peaceful

A useful thing to remember is:

• Before a noun, it usually needs な
• At the end of a sentence before です, it does not use な

So:

• 平和な町 = a peaceful town
• この町は平和です = This town is peaceful

Because な is only used when a na-adjective comes before a noun.

So:

• 平和な町 = peaceful town
  (平和な directly modifies 町)

But in your sentence, 平和 is not modifying a noun. It is ending the statement as the description, so you say:

• この町は平和です。

Not:

• この町は平和なです。 ✘

That would be ungrammatical.

です makes the sentence polite and works like a polite copula.

In a sentence like this, it is similar to is in English, though it does not match English perfectly in every situation.

So:

• 平和です = is peaceful / is peaceful (polite)

A less polite form would be:

• この町は平和だ。

That form is more plain and is not what beginners usually learn first.

Japanese does not have articles like English a, an, and the.

So 町 can mean:

• a town
• the town
• just town

The context tells you which is most natural.

In this sentence, because of この (this), the meaning is already specific:

• この町 = this town

So no article is needed.

No, normal Japanese writing usually does not use spaces like this.

A standard version would be:

この町は平和です。

Spaces are often added in beginner materials to make the sentence easier to read and to show where the parts are.

So the spaced version is a learning aid, not standard everyday writing.

Not always. Kanji often have multiple readings.

For 町:

• まち is a common standalone reading meaning town
• In some compound words, it may be read ちょう

But in this sentence by itself, 町 is read まち.

So here:

• この町 = このまち = kono machi

Yes, Japanese very often omits things that are clear from context.

For example, if everyone already knows you are talking about this town, someone might simply say:

• 平和です。 = It’s peaceful.

But Japanese can also state the topic clearly when needed, especially in textbook sentences. Here, この町は is included to make the topic explicit and easy to understand.

So this sentence is very natural, but Japanese would also allow omission if the context made it obvious.