We worked from Birgitte's during three weeks in Jan/Feb and we throughly enjoyed the place. It's big, located in a quiet neighbourhood, yet close to all the great restaurants, cafes and shops that Palermo Soho has to offer.
The internet connection was stable and with two floors, you could always find a quit place to take calls simultaneously. However, there is only A/C in the bedrooms so the kitchen and main living room got very hot and stuffy at times. The kitchen is big and pleasant to cook in but would benefit from some sharp knives, new pans and a deep clean.