First you figure out what style you like.
Modern ? French ? Antique ?
Brand new ? High rise ? Petit hotel?
PB ... planta baja ( ground floor with garden) ?
Then you figure out how much you can afford.
Then you decide which neighbourhood suits you.
Recoleta, old beautiful buildings , embassies, grand museums, grand hotels, grand parks, grand avenues, Hippie Feria each weekend.
Sort of like NYC Upper East side.
Palermo, with its Botanical Gardens, parks, charming small neighborhood feel, a tiny bit more family neighbourhood feeling.
If you are from NY, the Upper Westside might come to mind.
Palermo Viejo/Soho/Hollywood ... funky boutiques, weekend flea markets, cool eateries, definitely good shopping, eating and artsy.
Imagine NY Soho.
San Telmo, one antique shop after another, cobble stone streets, old style buildings, private homes behind walls with bougainvillaea spilling over, parrots and little birds busy in the trees on the other side of high pink walls. Good cafes.
Very Old-World Buenos Aires.
Puerto Madero , they took the old waterfront and tore down ancient old buildings and Phillipe Stark and others came in and built fabulous , very expensive hotels, restaurants and lots of nice shops and cafes and bars.
Now it is the place to go on a Sunday for Brunch, or dinner at night with the lights from the city reflected in the water, or for an afternoons hike through the , Reserve Ecologica Castenera Sur
better known to us as the Puerto Madero Reserve. There you can take a walk, with only the sounds of birds and water lapping the shore, see some wildlife .... I could live without seeing a snake again, thank you very much ... and breathe fresh air and see just how brown the river is.
But a tiny apartment will cost around one million USD so let's keep looking .
There is Retiro, which is where there are government buildings and parks .
Belgrano ... beautiful streets lined with huge plane trees, gardens in front and behind the apartment buildings, wonderful old homes, fabulous examples of Argentine architecture .. and quiet and green.
Nearby is Chinatown. Which is only a couple of blocks of shops and restaurants but it is a China town.. so no complaining here !
Now make a choice.