Here's some characteristics of the banana I'm growing labeled "Pisang Ceylon":
I'm growing it in zone 10b San Diego county California, where our highest humidity is when it's cool and our lowest humidity (sometimes < 10%) is when it's hot.
It fruits at a pstem height of 7 feet.
The time of harvest is typically mid-summer. At that time I'll also have a single 3' to 4' pup (due to thinning) which will be next year's crop.
The plant appears to be as "cool tolerant" as Namwa.
The average fruit is about 4 inches long and 1 inch at the largest diameter.
The flesh has an orangish hue. It is sweet, but also has slight sub-acid flavor with something like nectarine overtones.
Here's two pictures, one of the stalk with fruit bud and the other during flowering and fruiting.