Mieszkanie jest umeblowane, ale w łazience nie ma wanny, tylko prysznic.

Because mieszkanie is a neuter noun. In Polish, adjectives and adjective-like forms must agree with the noun’s gender.

• masculine: umeblowany
• feminine: umeblowana
• neuter: umeblowane

So:

• ten pokój jest umeblowany = this room is furnished
• ta kawalerka jest umeblowana = this studio flat is furnished
• to mieszkanie jest umeblowane = this apartment is furnished

It is a form meaning furnished, built from the verb umeblować = to furnish.

In this sentence, it works like an adjective describing the apartment’s condition:

• mieszkanie jest umeblowane = the apartment is furnished

This is a very natural way to describe property in Polish, especially in ads or descriptions.

In a normal full sentence, jest is usually needed here:

• Mieszkanie jest umeblowane.

Without jest, it sounds more like a note, heading, label, or ad shorthand:

• Mieszkanie umeblowane = furnished apartment

So yes, you may see it without jest in listings, but in regular sentence style, jest is the standard form.

Because after w meaning in, Polish uses the locative case when talking about location.

The dictionary form is:

• łazienka = bathroom

But after w:

• w łazience = in the bathroom

You can also notice the spelling change:

• łazienka → łazience

That change is a normal case ending pattern.

Yes, ma literally means has, but nie ma is also the normal Polish way to say there is no or there isn’t.

So:

• W łazience jest wanna. = There is a bathtub in the bathroom.
• W łazience nie ma wanny. = There is no bathtub in the bathroom.

This is very common in Polish: the positive sentence often uses jest, but the negative version uses nie ma.

Because after nie ma, the noun normally goes into the genitive.

The base form is:

• wanna = bathtub

After nie ma:

• nie ma wanny = there is no bathtub

So wanny is the genitive singular form of wanna.

Because Polish often leaves out repeated words when they are obvious from context.

The full idea is:

• ... ale w łazience nie ma wanny, jest tylko prysznic.

But Polish very naturally shortens this to:

• ... nie ma wanny, tylko prysznic.

So the missing verb is understood.

Here, prysznic is the natural form because the phrase is understood as something like:

• jest tylko prysznic = there is only a shower

Also, prysznic is a masculine inanimate noun, and in the singular its nominative and accusative forms are the same:

• prysznic = nominative
• prysznic = accusative

So the unchanged form is exactly what you would expect here. Prysznica would be genitive, and that would not fit this contrast.

Tylko means only.

In this sentence, it creates the contrast:

• nie ma wanny, tylko prysznic = there is no bathtub, only a shower

So it is basically saying not X, only Y.

Ale means but and marks a stronger contrast.

That fits this sentence well:

• the apartment is furnished
• but the bathroom has no bathtub

You could sometimes see a in other contrastive sentences, but ale is the most natural choice here because the second part sounds like a limitation or drawback.

Because Polish normally uses a comma in the pattern:

• nie X, tylko Y = not X, but/only Y

So:

• nie ma wanny, tylko prysznic

That comma helps show the correction or contrast clearly.

Polish does not have articles like English a/an and the.

So:

• mieszkanie can mean an apartment or the apartment
• wanna can mean a bathtub or the bathtub
• prysznic can mean a shower or the shower

You understand which one is meant from context.

Yes. Polish word order is fairly flexible, although the original sentence sounds natural and neutral.

For example, you could also say:

• Mieszkanie jest umeblowane, ale w łazience jest tylko prysznic, nie ma wanny.

This means the same thing, but the emphasis shifts a little. The original version puts the lack of a bathtub first, which can sound more natural if that is the main point.

A rough English-friendly guide:

• mieszkanie ≈ myesh-KAH-nyeh
• umeblowane ≈ oo-meh-bloh-VAH-neh
• łazience ≈ wa-ZHYEN-tseh
• wanny ≈ VAHN-nih
• prysznic ≈ PRYSH-neets

A few useful pronunciation notes:

• ł sounds like English w
• sz sounds like English sh
• cz sounds like English ch
• rz/ż sounds roughly like the s in measure
• y is not the same as English ee

So prysznic starts with prysh-, not preesh-.