Ателье находится рядом.

Ателье is a noun. In Russian, it is usually treated as neuter singular.

It is also an indeclinable noun, which means its form does not change across cases:

• это ателье
• в ателье
• рядом с ателье

This is common with some borrowed foreign words in Russian.

Because it is treated as neuter, adjectives and past-tense verbs usually agree with it in the neuter form:

• хорошее ателье
• ателье было закрыто

Находится literally means is located or is situated.

So:

• Ателье находится рядом. = The atelier / tailor’s shop is located nearby.

Russian often uses находиться when talking about location in a slightly more explicit or formal way.

A more conversational version is:

• Ателье рядом.

That also means The atelier is nearby.

So the difference is roughly:

• Ателье находится рядом. = a bit more explicit/formal
• Ателье рядом. = shorter, more natural in everyday speech

In Russian, the present tense of to be is usually not expressed with a separate word.

In English, you say:

• The atelier is nearby.

In Russian, you often just say:

• Ателье рядом.

No separate word for is is needed.

In this sentence, though, there already is a verb: находится. So Russian is not omitting is here in the same way; instead, it is using a different verb meaning is located.

Here, рядом means nearby or close by.

Used by itself, it functions like an adverb:

• Школа рядом. = The school is nearby.
• Ателье находится рядом. = The atelier is nearby.

But рядом can also be used with с + instrumental to mean next to / beside something:

• рядом с домом = next to the house
• рядом с метро = next to the metro

So there are two very common patterns:

1. рядом = nearby
2. рядом с + instrumental = next to / beside

Yes, находится is the 3rd person singular form of находиться.

The -ся ending marks it as a reflexive verb in form, but in this case you do not need to think of it as literally reflexive in English. The whole verb находиться simply means:

• to be located
• to be situated
• to be found

So in this sentence, it is best learned as a complete vocabulary item:

• находиться = to be located

You do not need to translate the -ся separately.

Yes. Russian word order is flexible, and changing it often changes the emphasis, not the basic meaning.

These are all possible:

• Ателье находится рядом.
• Рядом находится ателье.
• Ателье рядом.
• Рядом ателье. (possible in context, but less neutral on its own)

The most neutral version is usually:

• Ателье находится рядом.

If you begin with рядом, you often put more emphasis on the location:

• Рядом находится ателье. = Nearby, there is an atelier.

The stress is:

• ателье → ателье́
• находится → нахо́дится
• рядом → ря́дом

A rough pronunciation guide:

• ателье ≈ a-tyel-YE
• находится ≈ na-HO-di-tsa
• рядом ≈ RYA-dam

So the whole sentence sounds roughly like:

• a-tyel-YE na-HO-di-tsa RYA-dam

The stressed syllables are very important in Russian, so it helps to memorize them early.

It is present tense, 3rd person singular.

The verb is:

• находиться = to be located

Its present-tense forms are:

• я нахожусь
• ты находишься
• он / она / оно находится
• мы находимся
• вы находитесь
• они находятся

Since ателье is a singular noun, Russian uses:

• ателье находится

Then you normally use рядом с + instrumental case.

For example:

• Ателье находится рядом с банком. = The atelier is next to the bank.
• Ателье находится рядом с домом. = The atelier is next to the house.

So the pattern is:

• рядом = nearby
• рядом с кем? / с чем?
  • instrumental = next to whom? / next to what?

Examples of the instrumental after с:

• дом → с домом
• банк → с банком
• метро → с метро (indeclinable, so it stays the same)

Yes, but the meaning changes slightly.

• Ателье рядом. = The atelier is nearby.
• Ателье здесь. = The atelier is here.
• Ателье тут. = The atelier is here (more conversational)

So рядом means near, not necessarily here.

If something is close but not exactly where you are, рядом is the better word.