Stayed in Vista Sol for 4 nights and enjoyed it very much. Hotel is very modern, lounge style. Standard room is large enough if you travel solo but maybe a little bit small if you travel with another person (not my case). Not a problem as they have deluxe rooms which are 30% larger.
Room has a lot of eletronic enhancements like 100% blackout eletronic courtains (the darkest i´ve ever seen), a lot of light configurations and a good office space. Lobby is nicely decorated and cafeteria area also. Breakfast is excelent with a large selection of fruits, juices, bread, egg, cheeses, pastries, etc,etc,etc.
Finally, what i like the most is the gym at the penthouse, with new equipments and a fantastic sauna and, must of all, always empty.

The reception service is really slow and its staff don't care about you at all.
Reservation staff are not commited to your well being and their lack of responsability is outrageous.
Despite of all, the room service staff are very helpful.

A nice design hotel in the heart of Buenos Aires. Very helpful staff. Great buffet at breakfast. Very good location near the main pedestrian area. I recommend it fully

Weekend stay in Buenos Aires; nice, functioning rooms with nice water pressure in the bath rooms, great mattress.

Excellent breakfast buffet, with plenty of choice in fruit and pastry.

Nice, helpful staff

Good location for Puerto Madero and well located for Florida pedestrian zone