Actually one word would do for the whole list of items to be commented on: "great"! Martin and Natalia are great hosts, who are readily available for questions and are helpful in identifying spots to go to. The flat is in a terrific location, in a very lively neighbourhood but the location allows for a real intimate neighbourhood feeling so that one can make friends with people (as we were able to do within our two week stay). This barrio mirrors the big city in terms of food, style, music, dancing, clubbing, and attitude ... . The whole experience is rounded off by the openess and friendliness of the people in Argentina. One caveat though: the more one makes an effort to speak Spanish, the better - no need to be perfect, but the effort is worth the result - whilst many people speak at least a bit of English, they really appreciate your effort ... .