We had a fantastic time at Charlotte's. The apartment is beautiful (although it's up 4 flights of stairs, so not recommended for accessibility issues). There is tons of storage and a lovely large bathroom. The bed and couch were incredibly comfortable. All rooms are well appointed with furnishings, tea/coffee, toiletries, etc.
We could not have asked for a better location to explore Copenhagen--it's minutes away from the major tourist sites, allowing us to arrive quickly and skip the queues. Also near plenty of cycle rental shops.
Highly recommended--we would stay again!