pigonhal ttaeneun chimdaega deo pyeonhage neukkyeojyeoyo.

피곤할 is the form used before a noun to mean when (someone is) tired or at the time one is tired.

• 피곤하다 = to be tired
• 피곤할 때 = when one is tired

With adjectives and verbs, Korean often uses this noun-modifying form before 때.

Compare:

• 바쁠 때 = when (someone is) busy
• 시간이 있을 때 = when there is time
• 졸릴 때 = when (someone is) sleepy

피곤한 때 is not impossible in all contexts, but here 피곤할 때 is the natural everyday way to say when tired.

The 는 adds topic or contrast.

So:

• 피곤할 때 = when tired
• 피곤할 때는 = when tired, / as for when tired, / at least when tired

In this sentence, it gives a slight contrastive feeling, something like:

• When I’m tired, the bed feels more comfortable.

It can imply comparison with other situations, such as:

• when you are not tired
• compared with other times
• compared with other places

So 는 helps frame when tired as the condition being discussed.

Because 침대 is the thing that feels comfortable, not the object someone is directly acting on.

• 침대가 더 편하게 느껴져요 = the bed feels more comfortable

Here, 느껴지다 works like to feel / to seem / to be felt, so the thing being experienced is often marked with 이/가.

Compare:

• 이 방이 넓게 느껴져요. = This room feels spacious.
• 오늘은 음악이 더 크게 들려요. = Today the music sounds louder.

If you used 침대를, it would suggest a different structure, more like directly feeling/perceiving the bed as an object, which is not the natural pattern here.

더 means more, and Korean often leaves the comparison unstated if it is obvious from context.

So 더 편하게 means:

• more comfortably
• more comfortable
• feel more comfortable

The hidden comparison might be:

• more than usual
• more than when not tired
• more than other places

So the sentence naturally means something like:

• When I’m tired, the bed feels even more comfortable.
• When I’m tired, the bed feels more comfortable.

편하게 is the adverb form of 편하다.

• 편하다 = to be comfortable
• 편하게 = comfortably / in a comfortable way

Here it modifies 느껴져요:

• 편하게 느껴져요 = feels comfortable / is felt comfortably

This is a very common pattern:

• 이 옷이 가볍게 느껴져요. = These clothes feel light.
• 그 사람이 친근하게 느껴져요. = That person feels friendly.
• 방이 아늑하게 느껴져요. = The room feels cozy.

So even though English often says comfortable like an adjective, Korean often uses the adverb form before 느껴지다.

Yes. 느껴져요 comes from 느껴지다, which often means:

• to be felt
• to seem
• to come across as
• to feel (in the sense of how something feels to you)

So:

• 편하게 느껴져요 = it feels comfortable / it comes across as comfortable

This sounds more natural here than 느껴요.

Compare:

• 저는 침대의 편안함을 느껴요. = I feel the bed’s comfort.
  This sounds more direct and deliberate.
• 침대가 편하게 느껴져요. = The bed feels comfortable.
  This sounds natural and experiential.

So 느껴지다 is very common when talking about impressions or how something comes across to you.

Historically and grammatically, yes, it is related to a passive-style form, but in everyday use you should often understand it as:

• feels
• seems
• comes across as

So in this sentence, it is not important to translate it as a literal passive like is felt every time. Natural English is simply:

• The bed feels more comfortable.

Many Korean learners find it helpful to think of 느껴지다 as an impression verb rather than a strict passive.

Korean often leaves out subjects like I, you, or people when they are understood from context.

So this sentence could mean:

• When I’m tired, the bed feels more comfortable.
• When you’re tired, the bed feels more comfortable.
• When people are tired, beds feel more comfortable.

Without context, it is usually understood as a general statement or the speaker’s own experience.

This omission is very normal in Korean.

It can mean either the bed or a bed, depending on context.

Korean does not use articles like a and the, so:

• 침대가 could be the bed
• or a bed

In this sentence, English usually uses the bed because it sounds more natural:

• When I’m tired, the bed feels more comfortable.

But Korean itself does not explicitly mark that difference.

느껴져요 is the polite, everyday speech style.

Base form:

• 느껴지다

Polite present:

• 느껴져요

This style is common in conversation and neutral polite writing.

Other possibilities:

• 느껴져. = casual
• 느껴집니다. = formal

So the sentence is in standard polite Korean.

Yes, and it is very natural.

Difference in nuance:

• 피곤할 때는 = when tired / in times when one is tired
  Slightly more descriptive, sometimes a bit more reflective or contrastive
• 피곤하면 = if/when one is tired
  More like a condition

So both are good:

• 피곤할 때는 침대가 더 편하게 느껴져요.
• 피곤하면 침대가 더 편하게 느껴져요.

The original sentence with 때는 has a mild as for when tired... feeling.

Yes. Because Korean omits the subject and uses a general condition, it can sound like a broad truth:

• When you’re tired, a bed feels more comfortable.

It can also be personal:

• When I’m tired, my bed feels more comfortable.

Korean often allows both readings unless the context makes one specific.