Signora, la receptionist Le darà la chiave magnetica appena la camera sarà pronta.

Signora is a direct form of address, like Madam or Ma’am in English. It is being used to speak politely to the woman.

When Italian uses a title this way, it often appears without an article:

• Signora, ... = Madam, ...
• Signore, ... = Sir, ...

So here it is not the subject of the sentence. It is just addressing the listener politely.

Le is the formal indirect object pronoun meaning to you.

In this sentence:

• la receptionist Le darà... = the receptionist will give you...

The capital letter is a politeness convention. In modern Italian, people may write le with a lowercase letter too, but Le is still common in formal contexts such as hotels, business communication, and customer service.

So:

• Le darà = will give you (formal)
• ti darà = will give you (informal)

Because Le here does not mean her. It is an indirect object pronoun meaning to you in the formal register.

That is different from La, which can be:

• a direct object pronoun: I see you (formal, singular) = La vedo
• or the feminine singular article: the

In this sentence, the structure is:

• dare qualcosa a qualcuno = to give something to someone

So:

• la chiave magnetica = the thing being given
• Le = to you

That is why Le is the correct pronoun here.

Darà is the simple future of dare (to give), third person singular:

• darà = he/she will give

Here the subject is la receptionist, so:

• la receptionist darà = the receptionist will give

Italian uses the future here just as English often does:

• will give

This is a very common point for English speakers.

In English, after when / as soon as / once, we often use the present tense for a future meaning:

• as soon as the room is ready

But in Italian, it is very common to use the future tense in both parts when both actions are in the future:

• appena la camera sarà pronta

Literally:

• as soon as the room will be ready

Natural English does not say it that way, but Italian does.

So the pattern is normal:

• La chiamerò appena arriverò.
• I’ll call you as soon as I arrive.

Here appena means as soon as.

So:

• appena la camera sarà pronta = as soon as the room is ready

Depending on context, appena can also mean other things, such as:

• just
• barely
• just now

But in this sentence, the meaning is clearly as soon as.

In hotel language, camera is the normal word for room.

• camera d’albergo = hotel room
• stanza = room in a more general sense

So in a hotel context, la camera is exactly what you would expect.

Yes, literally it means magnetic key, but in practice it usually refers to a key card or electronic hotel room key.

Hotels commonly use this phrase for the card you use to open the room door.

So even if the literal translation sounds a bit technical, the practical meaning is:

• room key card

This is a very normal Italian sentence order:

• la receptionist = subject
• Le = indirect object pronoun (to you)
• darà = verb
• la chiave magnetica = direct object

So the structure is basically:

• The receptionist will give you the key card

Italian often places object pronouns like Le before the verb:

• Le darà
• ti dà
• mi porterà

That is one of the most important word-order habits to get used to.

Yes. Italian sometimes uses English loanwords, especially in tourism, business, and hotels.

So la receptionist is perfectly possible and natural in many contexts.

You might also hear other expressions depending on style, for example:

• l’addetta alla reception
• la persona alla reception

But la receptionist is very understandable and common.

Because pronta agrees with la camera, which is a feminine singular noun.

• la camera → feminine singular
• pronta → feminine singular adjective

If the noun were masculine, the adjective would change:

• il documento è pronto

But here:

• la camera sarà pronta = the room will be ready