Breakdown of Creo que el piso ya no está disponible.
el piso
the flat
estar
to be (location/state)
que
that (relative pronoun, conjunction)
creer
to believe / to think
Questions & Answers about Creo que el piso ya no está disponible.
Why is está in the indicative here, shouldn't opinion phrases like this use the subjunctive?
While many opinion phrases trigger the subjunctive, creer que (to think/believe that) declares a fact or belief in the speaker's mind, so it takes the indicative (está). However, if you make the sentence negative—no creo que—you are introducing doubt, and that requires the subjunctive (esté).
I often see apartamento for apartment. Is piso used differently?
In Spain, el piso is the standard, everyday word for a residential apartment. You will hear apartamento, but in Spain it usually refers specifically to a smaller holiday rental or beach apartment.
Why do we need ya here? Doesn't no está disponible already mean it is not available?
Adding ya right before no creates the set phrase ya no, which translates to no longer or not anymore. By saying ya no está disponible, you emphasize that it was available before, but that status has changed.