Overall, pretty poor stay with Gustavo. There are so many good Airbnbs in Buenos Aires, that I'd advise you to find different/better.
I arrived to find that the toilet was not functioning at all. I wasn't forewarned about this, and only found out about it after a fairly large deposit was made.
I paid extra to have him not rent out the apt the day before so I could check in when my flight arrived, so he had a full 24 hours to resolve but didn't. His cleaner had told him, but he was out of town and didn't bother having someone else fix it.
He arrived back in BsAs after a day, and asked to enter the flat when I wasn't there. I did not feel comfortable with this, esp as I had a lot of cash on hand due to the Arg currency situation.
We agreed that he would come the morning of day 3. He did not come by 11 am, so I finally texted, and after a delayed response, he said he could make it in the middle afternoon. We had agreed on the morning. So frustrating to lose half a day of vacation due to this.
When he finally arrived (his texting I'll be right over, turned into an additional 2 hour wait), he randomly had brought a second person who awkwardly hung around, and rather than getting a replacement part, I had to wait another hour for him to buy super glue and he tried to DIY fix it.
Later on in the visit, he started texting me again, pressuring me to let him come to the apartment when I wasn't present (Don't you trust me?) to fix other things going wrong in the flat.
Minor note: the pool is kept about half full and is kind of disgusting
1) He absolutely should have let me know ahead of time that the toilet wasn't working
2) he should have gotten it fixed in the day before I arrived
3) He should have shown up on the morning he said he would have
4) he should fix his falling apart flat on his own time, rather than pressuring people to let him in unsupervised during the time they're paying to occupy the flat
5) did not prefer that he started contacting me on whatsapp rather than using airbnb for communication
I rarely leave airbnb reviews, but strongly did not enjoy my experience with Gustavo