estás

Tourist guides often say, “A recommended answer for 'How are you?

(form-of, indicative, present, second-person, singular) inflection of estar:
(form-of, indicative, present, second-person, singular, with-voseo) inflection of estar:

(intransitive) to be (have a temporary or permanent location in space)
(intransitive) to be (denotes a copula, in a transient fashion)
to be (auxiliary verb for the progressive/continuous aspect, preceding the gerund of the verb)
(intransitive) to be in a state (in a passive voice sense)
(reflexive) to be, stay (denotes a copula, in a transient fashion)
(intransitive) to be (still)
(intransitive) to be in a long-term state (in specific idioms)