My husband and I travel a lot and we like to stay at nice hotels. We just returned from Buenos Aires and stayed at both Marriott Plaza Hotel and at Sheraton Park Tower (St Regis). We opted to stay at Park Tower over New Years for 5 nights over the Marriott since it was luxury collection of SPG and my husband is a platinum member.
We were given a very low floor room even though we registered as SPG Elite members and on asking for a better room we were informed ' this is a luxury hotel you will find all rooms to be good rooms'. Room was fine though.
We had informed at check in we were extending a night and nobody even bothered with that so we had to do the extension online.
We were refused breakfast even though the table was laden with food because it was 10:50 and breakfast ended at 11:00. And unfortunatley it was not even done graciously instead with a big scowl we were told there is no breakfast. We just walked away.
On our last evening we were locked out of our room and when we went down to speak to the only person available he was busy chatting on his cell phone for 10-15 mins before even acknowledging us eventually when we informed him that we were locked out he said he thought we were supposed to be out of the hotel by now. We informed him about the extension which he located online and told us we should have let them know...which we had on checking in....he just barely apologized and then got back on the call he was on promptly.
The concierge service was non existent. Most times the bell boy was answering.
Unfortunatley in trying to go more luxury we missed out staying at Marriott longer which had MUCH better service and concierge.

Outstanding service in this remarkably exciting city. Terrific restaurants and hot nightlife within a 10-15 minute walk. Hit the Alamo Bar if youre interested in watching US sports; it's an expat hangout. Kilkenny's is another fun spot.

You *must* walk down Calle Florida while you're in BA.

The hotel itself is simply one of the best. Friendly, professional service, sumptuously appointed rooms, and an interesting lobby bar. I've traveled ~40 nights/yr. for more than a decade, and the Park Tower is definitely worth the preimum you pay. The attached Sheraton is ok, too, but I'd not trcommend the Sheraton Libradores (sp).

Stayed at Park Tower for 5 nights in December. Beautiful clean room with king size bed and separate seating area. Bathroom with separate shower cubicle which pipes the sound of the tv into it. Our room faced the main street but as we were on a high floor we were not bothered by the noise of the traffic. The hotel is situated in a good area within walking distance to many attractions. Staff helpful but a bit aloof. Butler service was non-existent, perhaps if we had requested room service he would have appeared. Concierge very good. Breakfast – quite a selection, except for hot food. No selection of eggs, for example. No offer of omelettes etc. Turn-down service each evening left with chocs and a couple of small bottles of water. Newspaper every morning – in Spanish.

Went to the business centre once to use the internet and no-one was there, came back later and still no-one there.

The swimming pool area is a big disappointment. It is located within the older (tatty) Sheraton Hotel. The sun beds were white plastic ones, with blue cushions which were all stained. There were no umbrellas for the beds only around the table and chairs. One visit was enough!

Upon checking out there was a charge for the restaurant which we did not use. We informed the receptionist of this and it was quickly deducted.

During our Buenos Aires visit we stayed at 5 different hotels, the Park Tower ( Starwoods Luxury Hotel Collection) located at the Sheraton complex on one of the main Avenues in the city was the BEST. Large beautiful room, excellent service and a breakfast spread that was not only fabulous but delicious. Hotel is an easy walk to Florida St. Pedestrian Mall, Gallerias Pacifico Mall and is a cheap taxi ride to anywhere in the city. We splurged and stayed at the the newest rave Palacio Duhau - Park Hyatt for 2 nights and I can truly say we enjoyed the Park Tower better and for 1/3 the price. See my review of our Argentina trip by typing in Argentina.