Kusyen itu mempunyai noda; walau bagaimanapun, upholsterinya masih baik.

In Malay, demonstratives usually come after the noun.

• kusyen itu = that cushion / the cushion
• rumah ini = this house
• buku itu = that book

So kusyen itu is the normal Malay word order, even though English says that cushion.

Mempunyai means to have or to possess.

So:

• Kusyen itu mempunyai noda = The cushion has a stain

However, mempunyai sounds a bit more formal or written. In everyday spoken Malay, many people would more naturally say:

• Kusyen itu ada noda
• Kusyen itu ada kesan kotor
• Kusyen itu bernoda

So yes, mempunyai is correct, but it is slightly more formal than casual conversation.

Noda means stain, spot, or blemish, especially a mark that spoils the appearance of something.

It is a perfectly good word, but it can sound a little formal or literary depending on context. In everyday speech, learners may also hear words like:

• kotoran = dirt / dirty mark
• kesan = mark / trace
• tompok = patch / blotch (depending on context)

So noda is correct, but not always the most conversational choice.

The semicolon links two closely related clauses:

• Kusyen itu mempunyai noda
• walau bagaimanapun, upholsterinya masih baik

This is similar to English:

• The cushion has a stain; however, its upholstery is still good.

The semicolon is appropriate because the second part contrasts with the first part. In less formal writing, a full stop would also work:

• Kusyen itu mempunyai noda. Walau bagaimanapun, upholsterinya masih baik.

Or in more everyday Malay, people often just use tetapi:

• Kusyen itu ada noda, tetapi upholsterinya masih baik.

Walau bagaimanapun means however, nevertheless, or even so.

It is similar to tetapi (but), but it is usually:

• more formal
• more common in writing
• slightly heavier in tone

Compare:

• walau bagaimanapun = however / nevertheless
• tetapi = but

So this sentence sounds quite formal or polished because it uses walau bagaimanapun instead of the simpler tetapi.

Yes, it can be used in Malay. Upholsteri is a loanword from English upholstery.

Then -nya is added:

• upholsteri = upholstery
• upholsterinya = its upholstery

So upholsterinya masih baik means its upholstery is still good.

This is understandable, especially in furniture-related contexts, but it may sound technical or a bit formal. In more everyday Malay, people might prefer wording such as:

• kainnya masih elok = its fabric is still nice
• sarungnya masih elok = its cover is still nice
• lapisannya masih baik = its covering/layer is still good

The best choice depends on what exactly you mean by upholstery.

Here, -nya means its.

So:

• upholsteri = upholstery
• upholsterinya = its upholstery

This is a very common Malay feature. -nya can show possession and often corresponds to English his, her, its, or sometimes the depending on context.

Examples:

• rumahnya = his/her house
• warnanya = its color / the color
• namanya = his/her name / the name

In your sentence, -nya clearly refers back to kusyen itu.

Masih means still, and baik means good.

So masih baik literally means still good.

In natural English, that often means:

• still in good condition
• still fine
• still okay

Here, it suggests that even though there is a stain, the upholstery has not been seriously damaged.

It is correct, but it sounds fairly formal and written.

That is mostly because of these choices:

• mempunyai instead of ada
• noda instead of a simpler everyday word
• walau bagaimanapun instead of tetapi
• upholsteri as a technical/borrowed term

A more conversational version might be:

• Kusyen itu ada noda, tetapi kainnya masih elok.
• Kusyen itu ada kesan kotor, tetapi sarungnya masih baik.

So the original sentence is fine, but it is not the most casual way to say it.

Malay verbs usually do not change form for tense the way English verbs do.

So:

• mempunyai does not mean specifically has, had, or will have by itself
• masih baik also does not show tense directly

Time is usually understood from:

• context
• time words, such as semalam (yesterday), sekarang (now), esok (tomorrow)

In this sentence, without any time marker, the default reading is usually present-time:

• The cushion has a stain; however, its upholstery is still good.

Yes. Baik and elok can both work here.

• masih baik = still good
• masih elok = still nice / still in good condition

In furniture or appearance contexts, elok often sounds a bit more natural because it can suggest that something still looks good or is still in decent shape.

So these are both possible:

• upholsterinya masih baik
• upholsterinya masih elok

The difference is small, but elok may sound slightly more idiomatic in everyday speech.

Yes. A few more natural everyday versions are:

• Kusyen itu ada noda, tetapi kainnya masih elok.
• Kusyen itu ada kesan kotor, tetapi sarungnya masih baik.
• Kusyen itu bernoda, tetapi upholsterinya masih elok.

These versions are less formal than the original, especially because they use ada or tetapi instead of mempunyai and walau bagaimanapun.