المراية على الحيطة قدام باب الحمام.

A common Egyptian pronunciation is:

il-mirāya ʿala l-ḥēṭa oddām bāb il-ḥammām

A rough sound guide:

• المراية = il-mirāya = the mirror
• على = ʿala = on
• الحيطة = il-ḥēṭa = the wall
• قدام = oddām = in front of
• باب = bāb = door
• الحمام = il-ḥammām = the bathroom

A few notes:

• In Egyptian Arabic, الـ is often pronounced il-.
• ق in قدام is usually pronounced as a glottal stop in Egyptian speech, so قدام sounds like ʾoddām / oddām.
• ح in الحيطة and الحمام is a strong breathy h sound.

In Arabic, present-tense sentences like this usually do not use a word for is/are.

So:

• المراية على الحيطة literally looks like the mirror on the wall
• but it means The mirror is on the wall

This is completely normal in Arabic. The location phrase itself works as the predicate.

If you wanted past or future, then Arabic would use other forms, but in the present, no is is needed here.

Here is a word-by-word breakdown:

• المراية = the mirror
• على = on
• الحيطة = the wall
• قدام = in front of / opposite
• باب = door
• الحمام = the bathroom

So the structure is basically:

the mirror + on the wall + in front of the bathroom door

Natural English: The mirror is on the wall in front of the bathroom door.

Because Arabic uses the definite article الـ directly on nouns.

In this sentence:

• المراية = the mirror
• الحيطة = the wall
• الحمام = the bathroom

But notice:

• باب does not have الـ

That is because باب الحمام is an iḍāfa-like structure, meaning the door of the bathroom or more naturally the bathroom door.

In Arabic, in this kind of construction:

• the first noun usually appears without الـ
• the second noun can be definite

So:

• باب الحمام = door of the bathroom = the bathroom door

Because باب الحمام is a possessed/linked noun structure: door of the bathroom.

In Arabic, when two nouns are linked this way:

• the first noun does not take الـ
• the second noun determines whether the whole phrase is definite

So:

• باب حمام = a bathroom door
• باب الحمام = the bathroom door

If you said الباب الحمام, that would sound wrong in standard Arabic grammar and also wrong for normal Egyptian usage in this meaning.

Yes, here قدام means in front of.

So:

• قدام باب الحمام = in front of the bathroom door

In Egyptian Arabic, قدام is very common in everyday speech for physical location.

Depending on context, it can also mean something like:

• before
• opposite
• ahead of

But in this sentence, the physical-location meaning in front of is the right one.

Arabic often builds location descriptions by starting with the thing being talked about, then adding location phrases.

So this sentence is:

• المراية = the mirror
• على الحيطة = on the wall
• قدام باب الحمام = in front of the bathroom door

That gives:

The mirror + on the wall + in front of the bathroom door

This order is very natural in Arabic. English also allows something similar, but Arabic relies on this structure even more often because there is no present-tense is here.

Both relate to wall, but they are used differently.

• حيطة is the common Egyptian Arabic everyday word for wall
• حائط is more formal and more associated with Standard Arabic

So in spoken Egyptian, الحيطة is exactly what you would expect in a sentence like this.

A learner should think of:

• حيطة = normal spoken Egyptian
• حائط = formal / MSA-style

Yes, المراية is the normal Egyptian Arabic word for mirror.

It corresponds to Standard Arabic المرآة.

A learner may notice:

• Egyptian spoken form: المراية
• Standard Arabic form: المرآة

This kind of difference is very common: the spoken Egyptian form is often easier in everyday pronunciation and slightly different from the formal written form.

Because على means on, while في means in.

Here the mirror is attached to or positioned on the wall, so:

• على الحيطة = on the wall

If you said في الحيطة, that would mean something more like in the wall, which is a different idea.

So على is the correct preposition for this sentence.

Yes, depending on context, that can be a very natural interpretation.

Because قدام can describe something located facing something else, English might translate it as:

• in front of
• opposite
• facing

So if the mirror is mounted on a wall facing the bathroom door, English could naturally say:

• The mirror is on the wall in front of the bathroom door
• The mirror is on the wall opposite the bathroom door

Both can fit, depending on the exact layout of the room.

A more Standard Arabic version would be something like:

المرآة على الحائط أمام باب الحمّام.

Compare the main differences:

• Egyptian: المراية

• Standard: المرآة

• Egyptian: الحيطة

• Standard: الحائط

• Egyptian: قدام
• Standard: أمام

So the sentence you were given is clearly natural Egyptian Arabic, not formal MSA.