Στην ακτή βρίσκουμε εύκολα ξαπλώστρα νωρίς το πρωί, αλλά το απόγευμα έχει πολύ κόσμο.

Στην is the common contracted form of σε την.

• σε = in / at / on / to
• την = the feminine singular definite article in the accusative

So:

• σε την ακτή → στην ακτή

After σε, Greek normally uses the accusative case.
The noun ακτή is feminine, and its accusative singular is also ακτή, so the noun itself does not visibly change here, but the article shows the case:

• nominative: η ακτή
• accusative: την ακτή

Βρίσκουμε is the 1st person plural present form of βρίσκω = find.

Greek often uses the we form in a general, everyday way, much like English can use:

• we
• you
• one
• or an implied general statement

So βρίσκουμε here can mean:

• we find
• we can find
• or more generally it’s easy to find

It does not always mean a very specific we. In context, it often sounds natural as a broad statement about what people typically experience.

It is most naturally understood as a general/habitual present.

So the sentence is not necessarily saying:

• Right this second, we are finding...

It is more like:

• Early in the morning, it’s easy to find a sunbed on the shore, but in the afternoon there are lots of people.

Greek uses the present tense very often for:

• habits
• repeated situations
• general truths
• typical conditions

That is exactly what is happening here.

Here εύκολα is an adverb, meaning easily.

It modifies the verb βρίσκουμε, not the noun ξαπλώστρα.

So:

• βρίσκουμε εύκολα = we find easily / we can easily find

This is different from the adjective εύκολος / εύκολη / εύκολο, which would describe a noun:

• ένα εύκολο μάθημα = an easy lesson

In this sentence, we need the adverb because we are describing how we find something.

A learner often expects μια ξαπλώστρα, and that would also be perfectly possible.

But Greek, especially in everyday speech, can omit the indefinite article in some contexts when the noun is understood as an indefinite item or as part of a general situation.

So:

• βρίσκουμε εύκολα ξαπλώστρα
• βρίσκουμε εύκολα μια ξαπλώστρα

Both can work, though the version without μια can sound a bit more general or colloquial.

You can think of it as something like:

• we can easily find sunbed space / a sunbed

Even if English strongly prefers a sunbed, Greek is sometimes looser here.

Νωρίς το πρωί means early in the morning.

Breakdown:

• νωρίς = early
• το πρωί = in the morning / the morning

Greek very often uses the definite article with parts of the day:

• το πρωί = in the morning
• το μεσημέρι = at noon / in the midday period
• το απόγευμα = in the afternoon
• το βράδυ = in the evening / at night

So νωρίς το πρωί is a very natural time expression, not something unusual word-for-word.

Because Greek often uses article + time noun as an adverbial time expression, without needing a preposition like English in.

Examples:

• το πρωί = in the morning
• το απόγευμα = in the afternoon
• το βράδυ = in the evening
• την Κυριακή = on Sunday

So αλλά το απόγευμα... is simply:

• but in the afternoon...

This is very common and something you will see all the time in Greek.

This is a very common spoken Greek expression.

Literally, έχει πολύ κόσμο is something like:

• it has a lot of people

But in natural English it means:

• there are a lot of people
• it’s crowded

Greek often uses έχει in an impersonal/existential way to mean that something is present somewhere.

For example:

• Στο μαγαζί έχει κόσμο. = The shop has people / There are people in the shop / The shop is busy.
• Στην παραλία έχει πολύ αέρα. = It’s very windy at the beach.

So here, έχει does not mean some specific subject literally has something the way English usually would. It functions more like there is/there are in everyday speech.

Because κόσμος often means people / crowd as a collective noun in Greek.

So:

• πολύ κόσμο = a lot of people
• more literally, much crowd / a lot of crowd

This is extremely common Greek.

Also, notice that πολύ here is not the adverb very.
It is the form of πολύς meaning much / many / a lot of.

With κόσμος in the accusative singular, we get:

• nominative: πολύς κόσμος = a lot of people
• accusative: πολύ κόσμο = a lot of people

You could say πολλοί άνθρωποι, and that means many people, but πολύς κόσμος / πολύ κόσμο is often more natural in everyday Greek when talking about a crowd.

Grammatically, κόσμο is singular accusative of κόσμος.

But semantically, it refers to many people collectively.

That is why it can feel confusing to English speakers. English often uses a plural noun:

• many people

Greek very often uses a singular collective noun instead:

• πολύς κόσμος
• πολύ κόσμο

So yes, the form is singular, but the meaning is plural-like.

Yes, Greek word order is fairly flexible, and the order here helps organize the information naturally.

Current structure:

• Στην ακτή = setting/place first
• βρίσκουμε εύκολα ξαπλώστρα = main statement
• νωρίς το πρωί = time
• αλλά το απόγευμα = contrast in time
• έχει πολύ κόσμο = contrasting result

This sounds natural because the sentence first sets the scene, then contrasts early morning with afternoon.

You could move elements around for emphasis. For example:

• Νωρίς το πρωί βρίσκουμε εύκολα ξαπλώστρα στην ακτή...
• Στην ακτή νωρίς το πρωί βρίσκουμε εύκολα ξαπλώστρα...

These are still understandable, but the original version has a smooth, natural flow and highlights the contrast well.