Okolo nema slobodnog mjesta.

Because nema is the normal Croatian way to say there is no / there are no / does not have.

Here it is being used in an existential sense:

• ima = there is / there are
• nema = there is not / there are not

So:

• Ima mjesta. = There is space.
• Nema mjesta. = There is no space.

By contrast, nije is from biti (to be) and means is not. It is used to negate predicates, not existence in this kind of sentence.

For example:

• To nije mjesto. = That is not a place.

But in your sentence, the idea is there isn’t any available space/place around, so nema is the correct choice.

Because after nema, Croatian normally uses the genitive case.

The basic dictionary form is:

• slobodno mjesto = free place / available spot / vacant seat

But after nema, it changes to genitive:

• slobodnog mjesta

So the sentence structure is:

• nema + genitive

Here:

• mjesto → mjesta (genitive singular)
• slobodno → slobodnog (adjective must match the noun)

This is a very common pattern in Croatian:

• Ima vremena. = There is time.
• Nema vremena. = There is no time.
• Ima slobodno mjesto. = There is a free place.
• Nema slobodnog mjesta. = There is no free place.

It is genitive singular.

Here is the breakdown:

• mjesto is a neuter singular noun
• its genitive singular form is mjesta
• slobodno is the adjective in nominative singular neuter
• its genitive singular neuter form is slobodnog

So:

• nominative: slobodno mjesto
• genitive: slobodnog mjesta

The adjective and noun must agree in case, number, and gender.

Okolo means something like:

• around
• around here
• nearby
• in the surrounding area

In this sentence it tells you the lack of space is not just in one exact spot, but in the area around.

Depending on context, English translations could be:

• There’s no free space around.
• There’s no room nearby.
• There are no available places around here.

It is a somewhat flexible adverb, and the exact English wording depends on the situation.

It can mean several related things, and context decides.

Common possibilities:

• place
• spot
• space
• seat

So slobodno mjesto can mean:

• a free spot
• an available place
• an empty seat
• room/space

For example:

• in a car park: an available spot
• in a classroom: an empty seat
• in a room: space
• on a list or reservation system: an available place

Croatian often uses mjesto in situations where English may choose different words.

Croatian word order is fairly flexible, and putting okolo first gives it a bit of emphasis.

So:

• Okolo nema slobodnog mjesta.
• Nema okolo slobodnog mjesta.

Both are possible, though the first sounds natural and highlights the idea of around here / nearby first.

Croatian often moves adverbs around more freely than English does. The meaning stays basically the same, but the emphasis shifts slightly.

Yes, that is understandable, and Croatian allows that kind of word order too.

However, Okolo nema slobodnog mjesta sounds more natural if you want to present around here as the setting first.

Very roughly:

• Okolo nema slobodnog mjesta. = Around here, there’s no free space.
• Nema slobodnog mjesta okolo. = There’s no free space around.

Both work, but the first is often smoother.

They are similar, and in many contexts they can overlap.

• okolo = around, around here
• uokolo = around, surrounding
• naokolo = around, all around

The exact nuance can vary by region and style, but for a learner, it is usually enough to know that they are close in meaning.

In this sentence, okolo is simple and natural.

Because Croatian has no articles.

English makes distinctions like:

• a free place
• the free place
• some free space

Croatian usually expresses these ideas through context, word order, and sometimes other words such as demonstratives.

So slobodnog mjesta by itself does not tell you a/the the way English does. You understand it from the situation.

The natural positive counterpart is:

• Okolo ima slobodnog mjesta.

This means:

• There is free space around.
• There are available places around.

Notice something important:

With ima, Croatian often also uses the genitive in this kind of existential meaning, especially when talking about an indefinite amount or availability:

• ima slobodnog mjesta

You may also hear:

• Ima slobodno mjesto.

That can sound more like there is a free seat/spot in a more specific sense.

So both patterns exist, but nema + genitive is especially important to remember.

A simple learner-friendly pronunciation guide is:

• O-ko-lo NE-ma slo-BOD-nog MYE-sta

A few tips:

• j in Croatian sounds like English y
• so mjesta starts roughly like mye-
• e is a clear eh
• o is a pure o, not a diphthong like in many English accents

The stress system in Croatian is more complex than this simplified guide shows, but if you say it clearly as above, you will be understood.