The flat was everything that was advertised and more. Plenty of space in the open plan living area and the attached bedrooms. It was well stocked with everything needed for daily living.
4 flights of stairs to get up to the flat may challenge some but wasn't an issue for us. Parking wasn't always outside the flat but we always found a space within a couple of hundred metres.
Copenhagen is stunning. Loads to see and do. Canal trip (hop on and off) from Nyhaven is a must as is a walk along the water front. Parking is easy and quite cheap in the city. We didn't try public transport but this also looked excellent.
Finally, our hosts were excellent and we always felt they were available if needed. We were met at the apartment and shown around with basic amenities also provided.
Highly recommended.