The 27-year-old has settled swiftly at Chloorkop since joining the Absa Premiership, CAF Champions League and Super Cup champions in January after his contract expired at ES Setif.
"It's a good country. Very nice people," Hachi tells KickOff.com.
"I am happy about my stay at Sundowns so far. It's a big team, good coach, good staff and good supporters. All the people speak about me being the first Algerian player even though I am also half French. I am happy to be here."
He adds: "I have played in different countries, France and Algeria and now in South Africa. It's a good level, a lot of good technical players and quick players. Its good for the league. My priority here is to win trophies with Sundowns."
Sundowns next face championship rivals Kaizer Chiefs at FNB Stadium on Saturday (20h15).