A stroke of luck for a change and the very first person I quizzed about Cafeteria Don Zoilo was able to provide a bit of information.
Back in the 1980’s, an old building stood at the side of the Hotel Balcón de Europa, housing amongst other things the Cafeteria Don Zoilo. Quite a classy place by all accounts. The San Miguel price of 110 pesetas – roughly one euro – would have been quite expensive at that time.
Inevitably, the old building was demolished and a new one built – the current building being occupied by the hostel and cafeteria Marissal. So now we know.