After news broke of his death all seven Serie A fixtures were postponed and tributes have been paid by fellow players and fans in the days since. An autopsy confirmed the 31-year-old suffered a cardiac arrest and died in his sleep.
Piazza di Santa Croce is a famous large open square in Florence, Italy, home to the Basilica of the same name.
The Daily Mail reports that Venezia coach Filippo Inzaghi, Inter Milan manager Luciano Spalletti, former Roma star Francesco Totti and Liverpool forward Mohamed Salah also attended the service. Astori's teammate, Croatian midfielder Milan Badelj, read a long farewell letter on behalf of the team. Whilst all Serie A games were cancelled on Sunday and moments of silence preceded all Champions League ties this week in honour of the defender.
The defender, who also played 14 times for Italy, was discovered by Fiorentina staff when he failed to show up for breakfast at the hotel in Udine. "He is always in our heart", Chiellini said after the 2-1 win over Tottenham. I cry many times, I always believe in him because he was a fantastic player. "Life goes on for us, but we have lots of thoughts and when you close your eyes, you see his daughter and think of what has happened and it's very hard to accept". It is not easy but he's always in our heart.
"It's hard but we have to continue our life. I just hope one thing: that we can carry on what Davide was for us, and that smile he had every day".
In an Instagram tribute following Astori's death, Buffon wrote: "Your little girl, deserves to know that her father was in all respects a flawless person". You are football, the pure one of children.
Fiorentina and Cagliari have retired Astori's No. 13 shirt, while the head of the Italian Olympic committee said he will talk with Astori's family to plan on how best to commemorate him.
The father of Astori's partner Francesca Fioretti had a bad turn in Santa Croce and had to be stretchered out to an ambulance. "He is a great example for all young men".