Nigel Adkins’ squad jetted out to the Algarve eight days ago to continue their pre-season preparations after reporting back for duty three weeks earlier.
As they were last year, the Tigers were based at the Cascade Wellness & Lifestyle Resort in Lagos during their time in Portugal.
And midfielder Stewart is confident that the training camp will turn out to be a huge plus for all involved in the long run.
“It’s been tough, but it’s what you need at this stage of the season,” he said.
“We’ve put in a lot of physical work and tactical work as well. We’ve given ourselves a good base for the rest of pre-season.
“Everything we’ve done has been towards helping us get geared up and ready for our first game of the new campaign.
“Games-wise, it was two really good tests for us. We came up against two good Portuguese sides who moved the ball really well.
“It provided us with something different to what we’ll come up against in the Championship in the coming season and that can only stand us in good stead.
“You always want to win games but it’s not the main thing. It’s more about gelling with the new guys and teaching our philosophies to them.
“We’ve had a lot of youngsters here as well. We’re all at different stages of our careers and they’re just at the beginning. They’ve done really well and had the right attitude.”
Reflecting on his pre-season so far, Stewart added: “It’s going well. Physically, I feel really good.
“It’s been good to get some game-time under my belt over here in Portugal, but we’ve just got to look to push on with the preparations once we get home. That’s really important.
“Credit to the coaching staff because they’ve worked hard and put a lot of thought into what we’re doing in pre-season – it’s been really good and everyone has enjoyed putting in the hard yards.
“We know it’s only going to get harder from this point though. There are more matches to come which will mean more game-time as we look to get ourselves ready for the big kick-off.”