What type of information are you looking for? How long will you be staying? It’s a large modern city with all the amenities, a neat flea market, and decent food. I only had one night there so I only saw the tourist end of things.
Yes I was in Buenos Aires for a little over a week a few years back, beautiful city and folks stay up very late there and enjoy life. They speak Spanish but it sounds like Italian the way they pronounce words.
I have a close friend who still lives there, let me know if I can help answer some of your questions