Thanks for everyone's feedback. We did end up living in Puerto Madero - have been here a week and we love it! It was funny the day after we arrived we had breakfast in our new little favorite cafe - i Fresh Market and La Nation paper had an article on the front page titled: "Puerto Madero in between glamour and decay" which stated the good, bad and ugly of Puerto Madero. We must be far enough away from the ugly, because we haven't seen it yet.
I do get it that I think you either love it or hate it, and it all depends what you are looking for in your stay in BsAs. If you want local flair, hip and happening, lots of little shops and a city feel - then this is probably not the place for you.
But for us we wanted the views, to be close to the water and to be just a bit away from the hustle and bustle of the city. The walk to the Subte is a solid 10-15 min..maybe a little faster if you aren't wearing boots with a heel. But that's okay - I am getting a bit more excersice than usual that way. In the last week I have explored the microcenter, San Telmo (over the weekend the flea market atmosphere was fun!) and Palermo. All either walking, with the Subte or if loaded down with packages grabbed a taxi. So being "so far" from everything has not stopped us from getting out and about.
As we were only going to be here 3 months and it was due to my husbands work assignment, we wanted to hit the ground running so to speak and only move-in once. So I didn't want to move into a hotel and look for a place while we were here. If it had been a longer stay say 6mo to 1 year than maybe I would have done that. But these days with Google earth, internet and this forum we had a pretty good idea of the area and where to live. We also were very happy with the services of Bairesapartments.com and are lucky that the owner of the apartment is very nice as well. The apartment looked exactly like the pictures and video on the website.