El dispensador de agua caliente está junto al surtidor de café.

Spanish uses estar for location, so está junto al surtidor de café means it is located next to it.

A very common contrast is:

• es = what something is, its identity or essential description
• está = where something is, or a temporary/state description

So here, because the sentence is about position, está is the natural choice.

Junto a means next to or right beside.

In the sentence, junto a + el surtidor becomes junto al surtidor.

That is because a + el = al in Spanish.

So:

• junto a el surtidor → incorrect
• junto al surtidor → correct

This contraction only happens with a + el. It does not happen with feminine nouns:

• junto a la mesa

Here de links a thing to what it contains, gives, or is for.

So:

• dispensador de agua caliente = dispenser of / for hot water
• surtidor de café = dispenser/nozzle/source of coffee

English often uses noun + noun combinations, like coffee dispenser or water dispenser, but Spanish very often uses de instead.

This is one of the most common patterns in Spanish:

• taza de café
• botella de agua
• máquina de café

In Spanish, adjectives usually come after the noun.

So the normal order is:

• agua caliente = hot water
• café frío = cold coffee
• mesa grande = big table

Putting caliente before agua would sound unnatural here.

Agua is feminine.

However, in the singular, feminine nouns that begin with a stressed a- sound often take el instead of la for pronunciation reasons:

• el agua
• el águila

But they are still feminine. You can see that in the adjective:

• el agua fría
• not el agua frío

In your sentence, there is no article before agua, but the noun itself is still feminine.

Because after de, Spanish often leaves out the article when talking about a substance or type in a general way.

So:

• dispensador de agua caliente
• surtidor de café

This is very normal and natural.

It is similar to English when we say:

• a cup of coffee
• a bottle of water

You do not need the unless you are talking about a very specific, already identified coffee or water.

They are similar, but not always identical.

• dispensador usually refers to a device that dispenses something
• surtidor often refers to a dispenser point, outlet, nozzle, or source where something comes out

In Spain, surtidor is also commonly used for things like a petrol pump. In this sentence, it suggests the coffee comes from that point/device.

So both words are related to dispensing, but dispensador can sound more like the whole machine, while surtidor can sound more like the dispensing unit or outlet.

Yes. That would sound natural too.

• junto al = next to, right beside
• al lado del = beside, next to

Both are very common.
Junto a can sometimes sound a little more direct or slightly closer, but in many everyday contexts they are interchangeable.

It means the water is hot.

The phrase de agua caliente describes what kind of dispenser it is: a dispenser of hot water.

If you wanted to say that the dispenser itself is hot, Spanish would normally say something like:

• El dispensador de agua está caliente.

So compare:

• dispensador de agua caliente = hot-water dispenser
• dispensador de agua está caliente = the water dispenser is hot

That distinction is very useful.

Because the stress falls on the final syllable: ca-FÉ.

In Spanish spelling, words ending in a vowel are normally stressed on the second-to-last syllable unless there is an accent mark. So without the accent, cafe would not signal the correct pronunciation.

The written accent shows you that the stress must go on the last syllable:

• café

In Spain, the j is pronounced as a strong throaty sound, not like the English j in job.

So junto sounds roughly like:

• HOON-toh, but with a harsher h sound produced further back in the mouth

It is the same sound you hear in words like:

• jamón
• José
• rojo

For an English speaker, thinking of it as a strong Spanish h is a good starting point.

Spanish usually uses articles more often than English.

So when referring to a specific object, Spanish normally says:

• El dispensador
• La mesa
• El café

Dropping the article here would sound unnatural in a normal full sentence. The article tells you we are talking about a specific dispenser already identifiable in the context.