للأسف، بطاقة الغرفة ليست هنا.

للأسف means unfortunately or regrettably.

It is pronounced roughly lil-ʔasaf.

A useful detail:

• it comes from لِـ
  • الأسف
• so literally it is something like to/for regret
• but as a whole expression, it simply means unfortunately

In normal usage, you should learn it as a fixed phrase.

In Arabic, the present-tense to be is usually not stated in simple sentences.

So:

• بطاقة الغرفة هنا = The room card is here
• literally, Arabic just says the room card here

This is very normal in Arabic.
The sentence only needs an explicit negative form when you want to say is not, which is why you get ليست هنا.

ليست is the feminine singular form of ليس, which is commonly used to negate nominal sentences in Modern Standard Arabic.

So:

• هنا = here
• ليست هنا = is not here

You can think of ليس / ليست as the standard way to say is not / are not in this kind of sentence.

Because the thing being talked about is بطاقة, and بطاقة is a feminine singular noun.

In Arabic, ليس agrees with the subject in gender and number, so:

• masculine singular: ليس
• feminine singular: ليست

Since بطاقة الغرفة is headed by بطاقة, the sentence uses ليست.

This is an iḍāfa construction, often called a genitive construction or noun + noun possession structure.

Literally:

• بطاقة = card
• الغرفة = the room

Together:

• بطاقة الغرفة = the card of the room
• in natural English: the room card

This structure is very common in Arabic and often corresponds to English expressions like:

• the student’s book
• the hotel room
• the office manager

In an iḍāfa construction, the first noun normally does not take ال.

So Arabic says:

• بطاقة الغرفة

not:

• البطاقة الغرفة

That is because the first noun is made definite by the whole construction. Since الغرفة is definite, the whole phrase بطاقة الغرفة becomes definite too.

So even without الـ on بطاقة, the whole phrase means the room card, not just a room card.

Because بطاقة ends in ة (tāʾ marbūṭa).

This ending is often pronounced:

• like -a / -ah when stopping on the word by itself
• like -t when the word is connected grammatically to what follows

In بطاقة الغرفة, the word is in an iḍāfa construction, so the ة is pronounced as t:

• biṭāqat al-ghurfa or, with full case endings, biṭāqatu l-ghurfati

This is a very common feature of Arabic pronunciation.

Because the sentence is referring to a specific room, not just any room.

So:

• غرفة = a room
• الغرفة = the room

In a hotel context, بطاقة الغرفة naturally means the room card, referring to a known room.

Also, in an iḍāfa, the definiteness of the second noun affects the whole phrase:

• بطاقة غرفة = a room card / card of a room
• بطاقة الغرفة = the room card / card of the room

A fully vocalized version is:

لِلْأَسَفِ، بِطَاقَةُ الْغُرْفَةِ لَيْسَتْ هُنَا.

This shows the grammatical vowels more clearly:

• لِلْأَسَفِ
• بِطَاقَةُ الْغُرْفَةِ
• لَيْسَتْ
• هُنَا

In careful grammatical reading:

• بطاقةُ is nominative
• الغرفةِ is genitive because it is the second part of the iḍāfa
• هنا is an adverb and does not take an ordinary case ending

In everyday reading and speech, these final short vowels are often not pronounced.

The given order is very natural:

للأسف، بطاقة الغرفة ليست هنا.

It starts with:

• a sentence adverb/expression: للأسف
• then the topic/subject: بطاقة الغرفة
• then the negative predicate: ليست هنا

Arabic word order can sometimes vary, but for a learner, this is a very good and standard pattern to follow.

Often, yes.

Literally, it just means the room card, but in real-life context it commonly refers to the hotel room’s key card.

So depending on context, English might translate it as:

• the room card
• the key card
• the hotel room key card

All of those can fit the same Arabic phrase.