The North-South thaw has prompted speculation that it could lead to direct talks between Washington and Pyongyang after months of tension and exchanges of insults between U.S. President Donald Trump and Kim, which has fueled fears of war.
It said Mr Kim had been impressed by "the features of the south side, which specially prioritized the visit of the members of the Democratic People's Republic of Korea... and expressed thanks for them".
A high-level North Korean delegation, which for the first time included a member of the ruling Kim family, also met with South Korean President Moon Jae-In on Friday.
Bach also shared his conversation with Kim Yong-nam on how the North's ceremonial head enjoys sports at the age of 90.
North Korean leader Kim Jong-un on Tuesday pledged efforts to continue the reconciliation with its arch-rival South Korea, as relations between the two countries have warmed rapidly over the last few weeks. "Because they don't want the eyesores that you see in Athens, that you see in Rio De Janeiro of these Olympic buildings now really falling into disrepair".
Other commentators say the women are effectively political tools and point out that the tight security surrounding them is indicative of repressive political control and the very poor state of human rights in North Korea.
South Korea on Wednesday approved a government fund plan to support North Korea's participation in the Pyeongchang Winter Olympics.
Kim Yo Jong invited South Korean president Moon Jae-in to North Korea on behalf of her brother
Though South Korea is hosting the Winter Olympic Games for the first time, the nation has some experience in the world of worldwide athletics, having hosted the 1988 Summer Games in Seoul.
Trump has at times questioned the goal of further talks with the North after years of negotiations by previous United States administrations failed to halt the North's weapons programmes.
It was an awkward start for the established South Korean skaters when they welcomed the new teammates from the North with bouquets of flowers and tight-lipped smiles.
Another CNN personality, columnist Salena Zito, tweeted that she is "deeply saddened by how my profession has normalized and glamorized this murderous regime".
"Frankly I think this view is too naive".
"No pressure comes off until they are actually doing something that the alliance believes represents a meaningful step toward denuclearisation", Pence was quoted as saying by the Washington Post.
Pence told Axios that regardless of the North-South talks, there was "no daylight" between the allies on the need to intensify pressure on Pyongyang. They appeared in the VIP box at the Olympic Opening Ceremonies on Friday night.
Olympic Women's Slalom: By the Numbers
Look for the skiers to make tight turns around poles, which is different than giant slalom with fewer and wider turns. That super-G was originally scheduled for Thursday but was pushed to Friday once the men's downhill was moved.