Goals from Douglas Luiz and English teenager Justin Oboavwoduo secured the win at the Continassa, extending Juventus' pre-season run to three matches without conceding.
Speaking to Sky Sport afterwards, Spalletti was pleased with the defensive solidity but singled out Douglas Luiz's overall performance for particular praise.
"Today he covered a lot of ground as well as playing the ball. These are his weak points and he improved on both today... I could have left him on a bit longer, but it's been tough going, there won't be room for many hard training sessions, I had two or three players at risk. The fact there were no muscular issues leaves me really happy," Spalletti said.
The Juventus boss also addressed reinforcements before the club's upcoming tour, with sporting director Marco Ottolini and chief football officer Frederic Massara continuing to work the market.
"Yes, I do expect some new faces. My office is between Ottolini and Massara, I know everything that's going on, I see their commitment and their presence in the market. They're experienced directors with contacts everywhere. The market is particularly complicated for various reasons, we got some signings wrong in previous years, now we have to catch up on certain positions. We don't have the ability to spend whatever we want like other clubs, we need to optimise. I think the directors have been excellent," he said.
Asked about the club's collective tribute to Franco Baresi, who passed away this week, Spalletti added: "I'll say all those beautiful things that so many others have already said. Many people have used words that perfectly describe the level of the man and the champion. Watching the videos, I saw one where Maradona is wearing Baresi's shirt... he decided Baresi was the Maradona of defenders."
Douglas Luiz, who also found the net against Nice, spoke to Sky Sport about his own pre-season form after a difficult first two years in Turin.
"Pre-season has gone very well. I'm in good shape and happy with the opportunity I've been given, I hope to show everything on the pitch. Today I managed to score and that's really important for me because this is where I want to be," the Brazilian said.
Spalletti, for his part, welcomed hearing that sentiment directly from the player: "I'm really pleased with what he thinks, which is obviously the most important thing for me. The work done over the last three weeks is helping me understand things and is helping me grow, both in training and in matches. I'm becoming convinced that I can stay at this club."
Asked how much that possibility means to him, Douglas Luiz added: "Obviously it's what I want. I was signed two years ago but haven't had many chances to play. Now I'm getting them again and that's what I want."
Elsewhere in the squad, Marseille have not given up on Jonathan David, even though the Canadian forward only recently joined Juventus on a free transfer from Lille.
Marseille see him as an ideal fit for their attack and have kept tabs on his situation for some time, but the player's mindset complicates any move: David does not view his time in Turin as finished business, and a strong World Cup campaign — three goals in five matches for Canada — has only strengthened his belief that last season's modest return understated what he can offer.
The arrival of Randal Kolo Muani adds to the competition up front, though it has done nothing to shake his resolve to fight for a role under Spalletti.
Juventus, for their part, are not treating David as a makeweight to be moved on. Having arrived for nothing, any sale would represent pure profit for the club, and an approach deemed significant enough would be given serious consideration.
That calculus could shift once Joshua Zirkzee's situation resolves: Spalletti rates the Dutch forward highly, and his signing would most likely require a departure elsewhere in attack, putting David among the more likely names to make way if the fee were right.
For now, though, nothing is imminent — Marseille continue to watch from a distance while David's focus stays fixed on winning Spalletti over.