We went here with our kids, the room was nice but cramped, typical for Banff perhaps. The bathroom was very small as well but on the plus side, we overlooked a terrace which was quite pretty. You pay extra for the terrace room, might not be worth the money for most folks as there are no views and you share that space with other guests.
The salt water pool and hot tub was excellent, a little small for kids swimming but they enjoyed it all the same. Sauna was dingy dark and a bit smelly. I didn't stay in there for long.
This hotel isn't as family friendly as other Deltas we've stayed at. At other Delta hotels kids 6 and under eat free & my older child was able to order off the regular menu for half price. They didn't provide this for us at the Banff location which was disappointing. My 5 year old did eat free. Be sure to check ahead of time about those details for your children.
What was an $80 meal at other places was over $160 here as we didn't get our usual Delta kids perks.
Not sure I would return here with kids - if staying as a couple, I probably would...