O.M.G.
This place is worth the money for the view alone. My husband and I recently stayed here on a trip to Lisbon and we felt like we had won the lottery -- this place is worth every penny and more. A fantastic location (near excellent restaurants, tons of nightlife, and great little coffeeshops) and the most stellar view of any place (apartment, hotel, or otherwise) we've ever seen.
If you're taking a trip to Lisbon, I have three words of advice for you: BOOK. THIS. APARTMENT.