Thank you all for your opinions.
I present the flower after a few days. The fragrance is, as expected, lovely, not the usual orchid fragrance but sweeter and spicier.
The lip resembles that of granulosa and has the same purple 'hairs'. The flowers are small at 8-9 cm but the humidity is also low, being grown on a sunny windowsill.
This might resemble a bit
Cattleya granulosa 'Fabula'
I don't know what to make of it, so granulosa with a "??" may win.