I loved staying at Eduardo. Is my second time there and I would go back anytime. The apartment is in one of the most beautiful buildings (PH) I ever visited in Buenos Aires (I'm porteña so I saw a lot). Historic Buenos Aires architecture at its best, it wows me every time I enter the place (and the cutest little neighbor's cat welcomes you if you are lucky :)
Location is perfect, right in the middle of San Telmo, a block from the Sundays craft market and next to Chile, my favorite street in the neighborhood. Café San Juan is just around the corner, and great restaurants are all around (go to Punto Café for the best coffee). The apartment is the last one in a row of units so is super private and silente. The highlight of the place is definitely the private garden. Magical! Check in and check out were always super easy and friendly.