je bangeun hangsang kkalkkeumhaeyo.

제 means my in a polite/humble way.

It comes from 저의, which also means my, but 제 is the much more common shortened form in everyday speech.

So:

• 제 방 = my room

Compare:

• 제 방 = my room (polite)
• 내 방 = my room (casual)

If you are speaking politely, 제 is the natural choice.

은 is the topic particle.

So 방은 means something like:

• as for my room
• my room, ...

In this sentence, 제 방은 항상 깔끔해요 sets my room as the topic and then says something about it.

A very literal breakdown would be:

• 제 방은 = as for my room
• 항상 = always
• 깔끔해요 = is neat/tidy

English usually does not mark the topic this way, but Korean does.

Korean topic particles change depending on whether the noun ends in a consonant or a vowel.

• after a consonant: 은
• after a vowel: 는

방 ends in the consonant ㅇ, so you use 은:

• 방 + 은 = 방은

If the noun ended in a vowel, you would use 는 instead.

항상 means always.

It usually comes before the verb or adjective it modifies. In this sentence, it comes before 깔끔해요:

• 제 방은 항상 깔끔해요.
• My room is always tidy.

Korean adverbs like 항상 are often flexible in position, but placing them before the descriptive word is very common and natural.

깔끔해요 means is neat, is tidy, or is clean-looking.

It comes from the dictionary form 깔끔하다, which is a descriptive verb/adjective in Korean.

It often suggests that something is:

• neat
• well-organized
• tidy
• clean in appearance

So for a room, 깔끔해요 is very natural.

Not exactly.

Both can relate to cleanliness, but they have different nuances:

• 깔끔하다 = tidy, neat, well-organized, clean-looking
• 깨끗하다 = clean, not dirty

For a room:

• 방이 깔끔해요 = the room is tidy/neat
• 방이 깨끗해요 = the room is clean

A room can be 깨끗하다 but not very 깔끔하다 if it is clean but messy.
A room can sound especially 깔끔하다 when things are arranged nicely.

The ending -해요 is the polite present-style ending.

깔끔하다 changes like this:

• dictionary form: 깔끔하다
• polite form: 깔끔해요

This makes the sentence sound polite and natural in everyday conversation.

So:

• 깔끔하다 = plain/dictionary form
• 깔끔해요 = polite everyday form

In Korean grammar, 깔끔하다 is a descriptive verb (often called an adjective in learner-friendly explanations).

In English, we say is tidy using the verb to be plus an adjective.
In Korean, descriptive words like 깔끔하다 work more like verbs and can end a sentence by themselves.

So Korean does not need a separate word for is here.

That is why:

• 제 방은 항상 깔끔해요.

is a complete sentence all by itself.

A close literal breakdown is:

• 제 = my
• 방은 = room + topic
• 항상 = always
• 깔끔해요 = is tidy

So very literally:

• As for my room, always tidy-is.

Of course, natural English is:

• My room is always tidy.

Korean often puts the main descriptive word or verb at the end of the sentence.

Yes, but the nuance changes a little.

• 제 방은 항상 깔끔해요 = As for my room, it is always tidy.
  This sounds like you are presenting my room as the topic.

• 제 방이 항상 깔끔해요 = My room is always tidy.
  Using 이/가 puts more focus on my room itself as the subject.

In many everyday situations, 은/는 sounds more natural here because you are talking generally about your room.

Yes, if the context is clear.

Korean often leaves out words that are already understood. So if everyone knows you are talking about your own room, you could simply say:

• 방은 항상 깔끔해요.

This would still mean:

• The room is always tidy
• or My room is always tidy, depending on context

But if you want to make it clear that it is your room, keeping 제 is helpful.

Yes, it is very natural.

제 방은 항상 깔끔해요 is a normal and polite way to say that your room is always neat.

It would fit well in situations like:

• introducing your room
• talking about your habits
• comparing your room with someone else's
• answering a question about cleanliness or organization

It sounds polite but not overly formal.