I've stayed at 5 star hotels less comfortable than this.
Really difficult to beat the location next to the train that takes you to Palermo and also the Recoleta cemetery. The duplex makes you feel like a king. Very spacious and quality materials. the kitchen was one of the nicest I've had in all my Buenos Aires stays. The only con might be the need to raise/lower the curtains per your lighting and privacy needs, but in my opinion it's worth it.
Other little details that stood out: paper towels supplied in kitchen, fully stocked bathroom, smart tv with Netflix+YouTube.