I stayed at Pablo and Kristoffer's for 6 weeks and I loved it so much that I even extended my time there. I can't imagine a better location to enjoy all Palermo has to offer - with all the action of Soho right next door, a short walk to explore the hip Villa Crespo, P. Hollywood and P. Sensible, and even walking distance to the Bosques and P. Chico.
I stayed in summer, so can confirm both the air conditioning (there's 2!) and wifi work fantastically well. The apartment is very comfortable for a long stay, though the kitchen might not suit a gourmet chef. The leafy view from the 5th floor balcony was refreshing and the friendly building manager always brightened my day.
Possibly the best thing of all was Pablo's hospitality - he frequently checked on anything I needed (with good English). I felt I could reach out with any questions and when small issues arose he was not only responsive but always went out of his way to get them fixed urgently. I would not hesitate to stay again!