Στο καφενείο μένω λίγη ώρα ακόμα, αλλά δεν πίνω δεύτερο εσπρέσο όταν ξέρω ότι η καφεΐνη δεν θα με αφήσει να κοιμηθώ.

Greek word order is flexible, so speakers often move a phrase to the front for topic or emphasis.

• Στο καφενείο μένω... = At the café, I stay...
• A more neutral order could also be Μένω στο καφενείο...

Putting Στο καφενείο first sets the scene immediately: it tells you where the action happens before anything else.

Στο is a contraction of σε + το.

• σε = in / at / to
• το = the

So:

• στο καφενείο = at the café / in the café

This is extremely common in Greek:

• στο σπίτι = at home
• στο σχολείο = at school
• στον φίλο = to the male friend
• στη φίλη = to the female friend

Because καφενείο is a neuter singular noun, and after σε you use the accusative form.

For this noun, the nominative and accusative are the same:

• nominative: το καφενείο
• accusative: το καφενείο

So:

• στο καφενείο = σε το καφενείο

Here μένω means I stay / I remain.

This verb can mean different things depending on context:

• Μένω στην Αθήνα. = I live in Athens.
• Μένω λίγο ακόμα. = I’m staying a little longer.

In this sentence, because of λίγη ώρα ακόμα, it clearly means staying/remaning for a bit more time, not living there.

Because λίγη agrees with ώρα, which is a feminine singular noun.

• λίγος = masculine
• λίγη = feminine
• λίγο = neuter

Since ώρα is feminine:

• λίγη ώρα = a little time / a little while

This is a very common expression.

It means a little while longer or for a little while more.

Piece by piece:

• λίγη ώρα = a little while
• ακόμα = still / more / yet

Together:

• μένω λίγη ώρα ακόμα = I stay a little while longer

That is a natural Greek word order for this kind of phrase.

• λίγη ώρα ακόμα sounds very normal and idiomatic.
• It means a little while more / a little longer.

Greek often places ακόμα after the time expression it modifies:

• δύο μέρες ακόμα = two more days
• λίγο ακόμα = a little more
• μια ώρα ακόμα = one more hour

Greek often uses the present tense for habitual or general actions, just like English does.

So δεν πίνω δεύτερο εσπρέσο means something like:

• I don’t drink a second espresso
• I’m not having a second espresso
• I don’t order a second espresso

The present here describes a regular choice or policy, not just a single action happening at one exact moment.

Because Greek often leaves out the indefinite article where English uses a/an.

So:

• πίνω δεύτερο εσπρέσο literally = I drink second espresso
• natural English = I drink a second espresso

Greek does have words corresponding to a/an (ένας, μια, ένα), but they are not always used the same way English uses them.

Because δεύτερο agrees with εσπρέσο.

Here εσπρέσο is treated as a neuter noun, so the adjective must also be neuter singular accusative:

• masculine: δεύτερος
• feminine: δεύτερη
• neuter: δεύτερο

So:

• δεύτερο εσπρέσο = second espresso

Usually εσπρέσο is treated as an indeclinable loanword, so it often stays the same in different cases.

For example:

• το εσπρέσο
• του εσπρέσο
• το εσπρέσο

Not every speaker treats every loanword exactly the same way, but in everyday modern Greek, εσπρέσο commonly remains unchanged.

Όταν means when.

It introduces a time clause:

• όταν ξέρω ότι... = when I know that...

In context, it gives the condition in terms of time or circumstance: when I know that caffeine won’t let me sleep, I don’t drink a second espresso.

Greek όταν is very common for when clauses.

Because they do different jobs.

• όταν = when
• ότι = that

So the structure is:

• όταν ξέρω = when I know
• ότι η καφεΐνη... = that caffeine...

Together:

• όταν ξέρω ότι... = when I know that...

This is a clause inside another clause.

Because the speaker is stating a general present-time fact or habit.

• ξέρω = I know

The idea is: whenever I know that caffeine will keep me awake, I don’t drink another espresso.

Greek uses the present tense here naturally for repeated or general situations.

Yes. δεν θα is the normal way to say will not.

• θα αφήσει = will let
• δεν θα αφήσει = will not let

This is completely standard Greek.

Examples:

• Δεν θα έρθω. = I will not come.
• Δεν θα το κάνω. = I will not do it.

Because με is the direct object pronoun meaning me.

• με αφήσει = let me / leave me

The verb αφήνω commonly takes a direct object:

• με αφήνει = he/she/it lets me
• σε αφήνει = lets you
• τον αφήνει = lets him

μου would mean to me / my, which is not what this verb needs here.

The basic meaning of αφήνω is leave, but it also very often means let / allow.

Here:

• δεν θα με αφήσει να κοιμηθώ

means:

• it won’t let me sleep
• it won’t allow me to fall asleep

So this is a very common Greek structure:

• αφήνω κάποιον να... = let someone do something

Examples:

• Με αφήνει να φύγω. = He lets me leave.
• Δεν με αφήνουν να μπω. = They don’t let me enter.

Because Greek normally uses να + verb after verbs like let, want, can, try, begin, etc.

So:

• με αφήσει να κοιμηθώ = let me sleep / let me fall asleep

This is a standard Greek pattern:

• Θέλω να πάω. = I want to go.
• Μπορώ να το κάνω. = I can do it.
• Με αφήνει να μιλήσω. = He lets me speak.

Because κοιμηθώ is the aorist subjunctive form, and here it refers to the event of falling asleep, not the ongoing state of sleeping.

Compare:

• κοιμάμαι = I sleep / I am sleeping
• να κοιμηθώ = to fall asleep / to get to sleep

In this sentence, the idea is not just being asleep in general, but being able to fall asleep. That is why να κοιμηθώ is the natural choice.

It is the simple future.

Structure:

• θα + perfective stem / form

So:

• θα αφήσει = will let

This usually refers to a single whole event in the future, not an ongoing repeated action at that moment.

Because the speaker is talking about a general rule involving a future result.

The logic is:

• When I know that the caffeine will not let me sleep, I don’t drink a second espresso.

So the knowing happens now or generally, but the not being able to sleep is a later consequence. That is why Greek naturally uses the future δεν θα με αφήσει.

Yes.

In:

• η καφεΐνη δεν θα με αφήσει να κοιμηθώ

the subject is η καφεΐνη = the caffeine.

Then:

• δεν θα αφήσει = will not let
• με = me
• να κοιμηθώ = fall asleep

So the structure is:

The caffeine + will not let + me + fall asleep

Not with exactly the same meaning.

• όταν ξέρω ότι... = when I know that...
• γιατί... = because...

The original sentence focuses on the circumstance: in those situations when I know this.

If you used γιατί, the meaning would shift more toward direct explanation:

• ...αλλά δεν πίνω δεύτερο εσπρέσο γιατί η καφεΐνη δεν θα με αφήσει να κοιμηθώ.
• ...but I don’t drink a second espresso because caffeine won’t let me sleep.

That is possible Greek, but it is not exactly the same nuance.

It sounds most naturally like a habitual behavior or general personal rule.

Clues:

• μένω λίγη ώρα ακόμα can fit a current situation, but
• δεν πίνω δεύτερο εσπρέσο όταν ξέρω ότι... sounds like a repeated principle

So the whole sentence reads naturally as something like: I stay a little longer at the café, but I don’t have a second espresso when I know caffeine will keep me from sleeping.

Often yes, but not always perfectly.

Καφενείο traditionally refers to a Greek coffeehouse, sometimes with a slightly more old-fashioned or local feel than café in English. In many learning contexts, café or coffeehouse is a good translation.

A learner should mainly remember:

• καφενείο = coffeehouse / café

But the exact cultural feel can depend on context.