Stayed here for 2 months and loved it. Sydhavn is a bit quiet, but the bustling areas of Copenhagen are a short walk or metro away.
Be aware: as this is run by Blueground (another large accommodation company) it’s a bit odd they also ask for a contract to sign and further documents from what is provided to air bnb. A little more work and not sure what that does with the air bnb cover. No matter though as it all worked out really well for us.