The Emperador is modern, sound-proof, efficient, reliable and always has power which after staying 2 weeks in a BA short-term rental apartment was a very welcome change. (A good value too, if you compare it to its Recoleta neighbors as you can pay in pesos obtained elsewhere-think "blue" rate). Trustworthy (and complimentary) luggage storage as well. Easy walk to Retiro train station, Patio Bullrich shopping center, a Winery wine shop and Shell gas station just a 1/2 block away. Always wondered why Emperador Hotel, such a large and modern hotel, had only one revolving door entrance (and one lockable side entrance) and a lobby full of bellhops plus one stern looking man standing right by the revolving door wearing an earpiece. Having had a piece of my luggage stolen from the lobby of another BA hotel (the Wilton) two weeks before during check-in time, I now understand (and appreciate) the Emperador's over-staffing and security measures, visible in the lobby area.
The Emperador is fine and I highly recommend it!!; the following is just a caveat in general about checking in and out of Argentinian hotels. Forget the "bird-poop sprayed on you", seems the latest "scam" is well-dressed, cell phone toting, "waiting for a cab", "business women" sitting in 4+ star hotel lobbies (especially at the hotel's published check-out time) with the ability to snatch your luggage faster than you can say "Don't cry for me..." In fact our hotel in Salta, AR specifically put in writing that "one must be very careful and cautious and watchful of ones luggage during check-in and check-out". Therefore, try to avoid checking in at 11 am or Noon, or whenever the hotel's published check-out time is, also check out early or late, at any AR hotel. Also, sadly, if you cannot strap the piece of luggage to your body, consider it a potential target of theft. As I typed in the "What did you like?" section, the Emperador has a very visible and conscientious security presence in their lobby. Still, if the cruise ships continue to use the Emperador as their BA hotel of embarkation/disembarkation, then potentially 100+ guests could be present in the lobby at check in/checkout time. If anybody can handle the situation it would be the staff at the Emperador, but a professional thief is still a professional thief, for a good reason.