here is my take on the song- it's not a girl- it's a place so if you replace "girl" with "love" then you could say"

Once upon a summer time ...........8 (with rest beat)
I fould a love that I called mine..8
Summer kisses sweet like wine......7 (with rest beat)
Ensenada

I found a little seniorita...... 8 (unaccented "I")
Heaven sent, a real man pleaser..8 (I like your first choice)
Iron gates could never keep her. 8
In Ensenada

Chorus
Ensenada by the sea
Blowing through my memory
Carried on her gentle breeze
She’s still beautiful to me
Ensenada….Ensenada

Coal black night against the starlight 8
Bodies outlined in the moonlight.......8
Passion growing on a hot nignt.........8 "ig- nite" is not natural to say
In Ensenada

Eyes that snapped like castanets 7 (with rest beat)
Deep reflecting pools in sunset 8
A love that I can not forget 8
Ensenada

Repeat Chorus

"Imagination is more important than knowledge." - Albert Einstein