Na recepci v hotelu se ptám, jestli máme rezervaci na dvě noci.

In Czech, na recepci is the normal idiomatic way to say at the reception/front desk.

• na often means at/on in expressions for places where something happens
• recepci is the locative singular of recepce

So:

• na recepci = at the reception desk
• v hotelu = in the hotel

A lot of place expressions in Czech are simply learned as fixed patterns:

• na poště = at the post office
• na nádraží = at the train station
• na univerzitě = at the university

Even if na literally often means on, here it is just the natural Czech preposition.

Because v means in, and after v, the noun usually goes into the locative case.

• dictionary form: hotel
• locative singular: hotelu

So:

• v hotelu = in the hotel

This part tells us the setting more specifically: at the reception, in the hotel.

Ptát se is the full Czech verb meaning to ask.

So the base verb is not just ptát, but ptát se.

In the sentence:

• ptám se = I ask / I am asking

Czech reflexive verbs often include se or si as a fixed part of the verb. In this case, se does not mean myself in a literal English sense; it is just part of how the verb is formed.

Examples:

• Ptám se recepční. = I ask the receptionist.
• Ptáš se mě? = Are you asking me?

Both are possible, but ptám se is the more neutral, basic order.

In Czech, short words like se often move to the second position in the clause. This is a common word-order rule for so-called clitics.

So after the opening phrase Na recepci v hotelu, Czech naturally places se early:

• Na recepci v hotelu se ptám...

This sounds natural and fluent. You could also hear:

• Na recepci v hotelu ptám se...

but that is less neutral and usually not the best default for a learner.

Jestli means whether / if when introducing an indirect yes-no question.

Here it introduces what is being asked:

• ptám se, jestli máme rezervaci = I ask whether we have a reservation

This is different from asking the direct question itself.

Compare:

• Máme rezervaci? = Do we have a reservation?
• Ptám se, jestli máme rezervaci. = I ask whether we have a reservation.

So jestli is the standard word for if/whether in this kind of sentence.

Because máme means we have.

• mám = I have
• máme = we have

The sentence is about checking whether we have a reservation, not just I. For example, the speaker may be traveling with another person.

Because rezervaci is the accusative singular of rezervace.

The verb mít (to have) takes a direct object, and that object is usually in the accusative.

• nominative: rezervace
• accusative: rezervaci

So:

• máme rezervaci = we have a reservation

This is a very common feminine noun pattern:

• informace → informaci
• situace → situaci

It means for two nights.

Breakdown:

• na = for
• dvě = two
• noci = nights

With length/duration in this pattern, Czech often uses na + accusative:

• na jednu noc = for one night
• na dvě noci = for two nights
• na tři dny = for three days

So rezervaci na dvě noci means a reservation whose duration is two nights.

Because after the numeral dvě (two), the noun appears in the form used with 2, 3, 4.

Here:

• noc = night
• with dvě → dvě noci

This is the normal pattern:

• jedna noc = one night
• dvě noci = two nights
• pět nocí = five nights

Notice how the noun changes again after five and above.

Also, dvě is used because noc is feminine. Compare:

• dva dny = two days
• dvě noci = two nights

Yes. The verbs are in the present tense:

• ptám se = I ask / I am asking
• máme = we have

In Czech, the present tense can often cover both simple present and present continuous meanings from English, depending on context.

So ptám se can mean:

• I ask
• I am asking

In this sentence, because it describes what is happening at the reception, I am asking is a very natural English translation.

Yes, but the meaning shifts a little.

• ptám se = I ask / I am asking
• zeptám se = I will ask / I ask once, as a completed action

Ptát se is imperfective, focusing on the action as ongoing or general.
Zeptat se is perfective, focusing on a single completed act of asking.

So:

• Na recepci v hotelu se ptám... = At the hotel reception, I’m asking...
• Na recepci v hotelu se zeptám... = At the hotel reception, I’ll ask...

For the given sentence, ptám se fits the scene of what the speaker is doing at that moment.

Yes, Czech word order is flexible, but different orders sound more or less natural depending on emphasis.

The given sentence is natural:

• Na recepci v hotelu se ptám, jestli máme rezervaci na dvě noci.

Other possible orders include:

• Ptám se na recepci v hotelu, jestli máme rezervaci na dvě noci.
• Jestli máme rezervaci na dvě noci, ptám se na recepci v hotelu.

But those may change the emphasis or sound less neutral.

As a learner, the given version is a good model because:

• it sets the scene first
• it places se in a natural early position
• it keeps the information flow clear

The given sentence is already perfectly normal, but in real life a Czech speaker might say something even more directly, for example:

• Na recepci se ptám, jestli máme rezervaci na dvě noci.
• Ptám se na recepci, jestli máme rezervaci na dvě noci.

And in actual hotel interaction, people often simplify further into a direct question:

• Máme rezervaci na dvě noci.
• Máme tady rezervaci na dvě noci.
• Dobrý den, máme rezervaci na dvě noci.

So your sentence is grammatically correct and natural, but everyday speech may often be more straightforward.

A few useful points:

• recepci is pronounced roughly ret-sep-tsi
• ptám begins with pt-, and Czech does pronounce both consonants
• jestli sounds roughly like yes-tli
• dvě has a soft sound at the start, roughly dvye
• noci has ts at the end: no-tsi

Also remember that Czech stress is almost always on the first syllable of each word:

• NA recepci
• V hotelu
• SE ptám
• JESTli
• MÁme
• rezerVAci
• NA dvě noci

The stress is not as strong as in English, but first-syllable stress is a very useful rule.