I got at the appartment early and by chance, met with Gladys, the cleaning lady who let me in. I never met Jose but I interacted and was greatly helped by his brother, Ezequiel. He greeted me and gave me tips about restos, outings, and even helped me exchange some money at the blue rate with a reliable contact. That part was greatly appreciated!
I enjoyed living in that appartment for 24 days, it is well situated in the heart of Palermo, lots of restos nearby ( make sure you call and reserve if you intend to eat out at the usual argentinean time around 10 pm ). We even had a small grocery store that sold fruits and veggies and eggs rightnext door!
Sleeping there is a bit noisy at night since it is a street were many buses stop so make sure to bring earplugs.
Appartment was beautiful, as shown in the pictures, overall great experience!