A record of three wins and three defeats in the competition was a great achievement with their losses coming against Olympic silver medallists, France, the Czech Republic who reached the final of the last World Championships and which currently sits fourth in the FIBA world rankings, and a Belarus side which is also inside the world's top ten.
Jennings, whose squad included a number of players who have yet to reach their prime, is delighted with the progress made since last year's Olympics in London, he commented: "We got a win in round two and we depart back to the UK with good performances behind us from what is the deepest continent in world basketball.
"So, to be in the second round and go 3-3 is a respectful record. But that doesn't mean we're not a little disappointed. People genuinely believed we could have been in that quarter-final. I'm not sure that was the case two, three, four years ago. The conversations I've had with the media, other people, have been very supportive and very credible. People thought we could have gone further.
"We take the lessons from our losses to the Czechs and Belarus who, after all, are the fourth and tenth ranked team in the world. And we also can't be disappointed from beating a team which qualified for last year's Olympics in Croatia."
Sunday's victory over Croatia also marked the last stop in the career of long-serving GB forward Kim Butler, who retires with 75 caps to her name.
"She's been a great ambassador, not just as a player, but for British Basketball," Jennings stated.
"The likes of Kim Butler are role models and a big reason why we've got young girls playing basketball at a very good level and dreaming of the future. Our job is to make sure the efforts of the likes of Kim have not been in vain."
That will come with a new young generation of British players, some of whom will be playing in the European Under-20 Championships later this summer, or even those coming through the development programmes of the home nations at junior level.
Having also taken wins in France over eventual quarter-finalists Serbia, as well as perennial powers Latvia, Butler believes she is leaving the sport in good hands, she said: "It's unfortunate that the win over Croatia didn't get us into that next round but things happen for a reason.
"We're going out on a great note. It's still disappointing we didn't progress through. But this is still one of our best tournaments ever."