O guichê está logo ali.

Because Portuguese usually uses estar for location.

• O guichê está logo ali. = the booth/counter is right over there.
• Ser is more for identity, definition, time, origin, and permanent characteristics.

So:

• É um guichê. = It is a booth.
• Está logo ali. = It is right there.

In English we use is for both ideas, but Portuguese separates them.

Guichê usually means a service window, ticket window, counter, or booth, depending on the context.

You might hear it in places like:

• airports
• bus stations
• banks
• government offices
• theaters
• parking garages

So it often refers to a small place where a person serves customers through a window or at a counter.

Because guichê is a masculine noun in Portuguese, so it takes o in the singular:

• o guichê
• os guichês

The ending -ê does not tell you the gender by itself. Portuguese noun gender is not always predictable from the ending, so this is something you usually learn with the noun:

• o guichê
• a estação
• o balcão

Ali means there, usually at a place not right next to the speaker, but still fairly identifiable.

Logo ali adds the idea of very near, just there, or right over there.

So:

• ali = there
• logo ali = right there / just over there

It often suggests the place is easy to reach or very close by.

These words all relate to location, but from different perspectives:

• aqui = here, near the speaker
• aí = there, near the listener
• ali = over there, a bit away from both, but still specific
• lá = there, farther away or less specific

In O guichê está logo ali, ali sounds natural because the speaker is pointing to a nearby visible place that is not exactly here.

In Brazilian Portuguese, guichê is pronounced approximately like:

gee-SHEH

A few details:

• gui here sounds like gee
• ch sounds like sh
• the final ê is stressed

So the stress is on the last syllable: gui-CHÊ.

The circumflex accent in ê shows the stressed syllable and the vowel quality.

In guichê, the last syllable is stressed:

• gui-CHÊ

Without getting too technical, the accent helps show that the final vowel is pronounced clearly and that the stress falls there. It also helps distinguish the correct pronunciation from what a learner might otherwise guess.

Yes, absolutely. Ficar is also very common for location.

• O guichê está logo ali.
• O guichê fica logo ali.

Both can mean The counter is right over there.

A small nuance:

• estar focuses on where it is
• ficar often sounds a little more like is located

In many everyday situations, either one works well.

Because logo is modifying ali and intensifying the idea of location.

• ali = there
• logo ali = right there / just there

This is a very common fixed expression in Portuguese. You will also hear:

• logo aqui = right here
• logo aí = right there
• logo na esquina = right on the corner

So the position sounds natural and idiomatic.

Guichê is common, but the most natural word depends on the place.

For example, Brazilians might also say:

• balcão = counter
• bilheteria = ticket office / ticket window
• caixa = cashier desk / checkout / payment window
• atendimento or posto de atendimento = service desk / service point

So guichê is correct and common, but in real life the exact noun can change with context.

Usually, no—not in this exact meaning.

O guichê está logo ali sounds natural because it refers to a specific booth/counter that both people can identify.

If you say just Guichê está logo ali, it sounds incomplete or unnatural in normal Portuguese.

Portuguese uses articles more often than English does, so where English might sometimes omit the, Portuguese often keeps o or a.

Yes, in some contexts.

• logo ali = right there / just over there
• bem ali = right there / exactly there

Both can work, but logo ali is especially common when pointing out a nearby place. It often gives a natural, conversational feeling of it’s very close.

So O guichê está bem ali is possible, but O guichê está logo ali is a very typical phrase.

It is neutral and very natural. You can use it in everyday conversation and also in polite situations.

For example, an employee at a station, airport, or office could easily say:

• O guichê está logo ali.

It is not slang, and it is not overly formal either. It is standard Brazilian Portuguese.