We spent the day at Luiz's place and it was great. The apto is very nice and spacious. The bed is very comfortable and big. The apto is simple but it is comfortable.
The location is amazing, 10 min walk to MALBA, there is park right in front of the apto and close ride to the airport.
we didn't have a chance to meet Luiz but we met his friend, which did the check-in and check-out and he was super friendly. Luiz was very quick to reply to my messages and responding in a friendly way.