À cette station, il y a une correspondance facile avec la ligne pour le centre‑ville.

No. Correspondance is a false friend.

• In transport, une correspondance means a connection / a transfer (changing from one line to another).
  • prendre une correspondance = to make a connection / transfer
• English correspondence (letters, emails, etc.) is usually correspondance only in administrative or formal language, and not in this context.

So here, une correspondance facile = an easy transfer (between lines).

Because correspondance is a feminine noun in French.

• Feminine singular: une correspondance
• Feminine plural: des correspondances

You can see the agreement with the adjective too:

• une correspondance facile (feminine) If it were masculine, it would be un correspondance facile (but this is wrong because the noun is feminine).

Il y a is a fixed expression that means “there is / there are”.

Breakdown:

• il = a dummy subject pronoun (it doesn’t refer to a person or thing)
• y = there
• a = has (from avoir)

Historically it means “it has there”, but in modern French you just learn it as the standard way to say “there is/are”:

• Il y a une correspondance facile = There is an easy transfer
• Past: il y avait (there was / there were)
• Future: il y aura (there will be)

In French, most adjectives normally go after the noun, and facile is one of them.

• une correspondance facile = a easy transfer

Only certain types of adjectives usually go before the noun (short, very common ones like grand, petit, bon, mauvais, joli, vieux, jeune, etc.).

Putting facile before the noun (une facile correspondance) sounds wrong or at best very strange in modern French. So the normal, natural order is:

une correspondance facile ✅

Both à and dans can be used with places, but they don’t give the same nuance.

• À cette station = at this station / at this stop

  • Focus on the point on the network / on the line.
  • This is what you see in announcements, maps, etc.

• Dans cette station = inside this station

  • Focus on the interior of the building / structure.
  • You’d use it more if you were talking about what you find inside (shops, facilities, etc.).

In a transport announcement about changing lines, À cette station (at this station) is the natural choice.

In everyday French transport vocabulary:

• une station

  • metro stop, tram stop, bus stop (in some systems), gas station (station-service), etc.
  • e.g. station de métro, station de tram

• une gare

  • railway station for trains (regional, national, high‑speed, etc.)
  • e.g. la gare de Lyon, la gare centrale

So this sentence is probably about a metro / tram stop, not a big railway station, hence station.

Here, avec expresses the idea of a connection “with” another line.

• une correspondance avec la ligne X
  = a transfer/connection with line X

Alternatives:

• à la ligne
  
  • Literally “to the line”; it’s not natural with correspondance in this sense.
• sur la ligne
  
  • Means “on the line” (location on the route), not the idea of changing to that line.

So correspondance avec la ligne is the standard expression:
Avoir une correspondance avec la ligne 2 = “to have a connection with line 2”.

Here pour indicates the destination / direction served by the line.

• la ligne pour le centre‑ville
  = the line going to / for downtown

Comparisons:

• au centre‑ville
  
  • Means “in/at downtown”, not “going to”.
  • La ligne est au centre‑ville = The line is located downtown.
• vers le centre‑ville
  
  • Means “towards downtown”, more vague; fine in some contexts, but on signs and announcements pour is more standard:
    
    • le bus pour l’aéroport = the bus to the airport

Also note the article:

• French almost always uses an article: le centre‑ville, not ∅ centre‑ville.

Centre‑ville is a compound noun: centre + ville.

The hyphen shows that the two words function as one single unit with a specific meaning (downtown / city centre), rather than just “a centre of a city” in a general sense.

You’ll see many similar compounds in French:

• chef‑lieu
• arc‑en‑ciel
• porte‑monnaie

In modern usage, centre‑ville with a hyphen is standard spelling for “downtown / city centre”.

Yes, it’s grammatically correct, but less elegant.

Possible orders:

1. À cette station, il y a une correspondance facile… ✅

   • Very natural, especially in announcements.
   • Starts with the location, then tells you what exists there.

2. Il y a à cette station une correspondance facile… ✅

   • Also correct, a bit more formal or written‑style.

3. Il y a une correspondance facile… à cette station ✅ but heavier

   • Correct, but feels a bit clumsy because the phrase à cette station is far from the verb il y a and from the beginning of the sentence.

So your version with …à cette station at the end is possible, but the original order is more natural and clearer.