This house is huge. I didn't get up too close to it, but to be honest it's not obvious if it was just once a twin. I can't figure out what's going on with the sided enclosure on the right side of the balcony; is it a bedroom? Why no window?
This is another example of poorly executed apartment conversions on grand old homes. The owners had no vision, at a time when it was just another 'old house'.
Anyway, it's ugly.