Ignacio's place is in an amazing location, in walking distance from lots of great restaurants, bars, and concert venues. It's easy to get around the city with lots of public transportation options nearby. We loved being in Palermo Hollywood and the pool was an awesome plus on hot summer days.
We stayed in this apartment for two months. It was comfortable and spacious - the bed was great and the blackout shades made it easy to sleep in. We cooked a lot in the apartment and found that some basic items were missing. We ended up buying stainless steel pots and pans (which we gave to a friend after), as the set in the house was scratched non-stick cookware. This wouldn't be an issue for short-term stays or if you don't plan on cooking.
Communication with Ignacio was quick, through and prompt. He was very generous and helpful with us.