I think it's worth separating this review into a few different sections:
The Location
Oh man, this apartment is in amazing spot. The location was easily this apartment's best feature. It's steps away from the M1/M2 metro lines that can get you anywhere in Copenhagen (or at least get you on your way to anywhere in Copenhagen) SO easily. We stayed in this apartment for close to two months, and commuting in for work and school in downtown Copenhagen was an absolute breeze. Plus there were plenty of markets nearby, some good coffee shops, a few lovely parks - all in walking distance. If you like running, there's a really nice long green path right nearby, and there were plenty of restaurants around as well, all while being in a quieter, more residential part of the city (or, I suppose Frederiksberg is a different town surrounded by Copenhagen). Just a lovely place.
The Host
Nat was pretty good. We never met, and she was pretty responsive, and was helpful with getting on the internet and giving us an extra set of keys. But, she did ask a few times about coming by to either get something or to enter the apartment when nobody was home. I've never had a host ask to do that before, let alone repeatedly, and it definitely put the idea in the back of my head that she was entering the apartment when we weren't there without our knowledge, which was a little off-putting.
The Apartment
I have mixed feelings. To start with the good: It was a cute place, with all the amenities you could ask for - functioning kitchen, laundry in the building, good seating space with a fantastic large dining table, and even a little balcony overlooking the street.
But it clearly had not been seriously cleaned in a long time. the bathroom was pretty gross, including what seemed like slime or mold around the drain and hair everywhere. There was also hair on all of the beds, it seemed like the sheets hadn't been changed before we got there - one room had a toenail clipping in the sheets when the bed was first used. The balcony was absolutely covered in bird poop, which was a bummer because it looked would have been so much nicer to sit out there without trying to tiptoe around caked on bird poop. Bugs were a common sight around the apartment including moths, bees (one of us was stung in our sleep) and other small many-legged creatures. The kitchen light turned into a strobe light if we tried to turn it off.
It wasn't cluttered or obviously messy, and, I think if we had stayed only a few days we wouldn't have noticed quite as much, but there ended up being a lot of things that we noticed more and more the longer we were there.
Also, and I want to stress that this part isn't Nat's fault AT ALL - but the neighbors constantly left trash spilling out into the shared landing. Like serious trash. Like "I'm stepping over half eaten pieces of pizza to go down the stairs" kind of trash.
Overall, I enjoyed my time in Denmark (to the point where figuring out how to move there permanently is now one of my top priorities haha) and living in the place we lived in was a big part of that. But I think I fell in love with the location of the apartment, rather than the apartment itself, and I would try to find a cleaner place to live next time.