We stayed at the Hotel Madero for 3 nights and would highly recommend the hotel. Located in the Port Madero area, great spot out of the city for relaxing with many great restaurants within walking distance. An easy and cheap taxi ride to any where in Buneos Aires. We lucked out and stayed in one of the newly updated rooms, ask for 101, 102, 103 or the best room 104 which is the largest room they offer.

Stayed in this hotel several nights while on a tour in Argentina. We found the location excellent. In Puerto Madero, cafes and restaurants whitin walking distance. Safe location. Nice rooms and attentive staff and good breakfast buffet.

Beautiful and modern hotel, though it's a little noisy. The rooms are very nice and the room service is great; the staff is also very friendly, but my complain is about the location: it's in Puerto Madero, but a little far from the more popular restaurants and other neighbourhoods. it's not a problem considering the very cheap taxi fares, but if you enjoy walking when visiting a new place, it's not a good place (though it's safe to walk in Puerto Madero, even at midnight).

I spent the weekend at the Madero, and everything was great, the room was big and comfortable, the shower was great and the staff was nice and helpful. When I arrived my key wasn't working the hotel staff fixed in few minutes and they all were polite.
I ate two times at their restaurant, Red, the food was well done and the service was good. I used the gym, it has a nice view of the river, it is not big but has everything you need to workout.
If you want to stay in this area this is for sure a great choice.