My wife and I stayed at Purobaires on our third trip to BsAs. Having spent the previous two trips at "major hotels" like the Park Hyatt, we opted for a change of scenery. I knew Palermo was the place to enjoy the best food and nightlife in the city.
The hotel itself is fine. Hotel staff are knowledgeable and service-oriented like you would find at a top hotel chain. Nothing incredibly special about the hotel design but no real negatives either. The rooms are average size - we had a deluxe with Jacuzzi. Bathrooms are nice but small and the beds are very comfortable. The hotel is fairly new and clean with a focus on guest safety and comfort.
As others have said, location is key and that's what Purobaires offers. I opted for Purobaires because Home Hotel was sold out. Frankly, the location of Purobaires is better. Anything you need including markets, clubs, pharmacies, gourmet restaurants, boutique shopping, pizza joints, etc. are within a four block walk.
The hotel arranged a couples massage for us and it was fantastic - highly recommend it. Also suggest dinner at Cluny and Bar Uriarte. You can spend a week here and never have a bad meal. Also worth cehcking out the bars and restaurants in Las Canitas which is a short cab ride away.