My husband and I will be visiting our daughter during her time of school abroad in Copenhagen. We plan to go end of April / first of May 2024 - no set dates yet (she still has to apply for her visa!). We plan to be gone for 15-17 days, so we assume 13-15 days to travel when subtracting 2 days for flying (flying in and out of Copenhagen). We do plan on spending at least 5 days in Copenhagen to see our daughter.
So that leaves approximately 8-10 days to travel elsewhere. We are thinking it might be best to travel via train. We would like to see Stockholm for sure, and most likely Oslo. Any suggestions on whether those two locations are doable in that time frame. Also suggestions of what to see (can be things a tourist would typically not find in guide books, but is truly worthwhile to see) and day trips around those two locations that are accessible by train and "must see". Restaurant and hotel recommendations are welcome too :)
I ask all of the above because this is a part of Europe that has not been on my radar as top destinations, and we do not know anyone who has traveled through Scandinavia. Thank you in advance for your feedback!!