Carsten and his partner Asia were very welcoming hosts, both with their own interesting insights about Copenhagen. The flat is beautiful and clean, and the room as described. As others have noted, there is only one bathroom and it can only be accessed via Carsten's bedroom. In principle, this is not an issue although for the sake of transparency, it should really be noted in the description of the airbnb. Guests should be aware that this just means that using the bathroom at night or early in the morning means one is disturbing Carsten and Asia's sleep, and decide for themselves whether this is something they are comfortable with. More importantly, it should also be noted that the bathroom cannot be locked. I was not bothered by this - door closed means it's occupied and that's fine - until Carsten accidentally walked in on me just as I was about to shower... Don't get me wrong, it was clearly an accident but I was just not very comfortable in the bathroom after that. I would therefore strongly recommend a lock for the bathroom door.
It was also a bit odd for us that a large variety of kitchen appliances (coffee maker, stove, oven, etc.) are listed in the Airbnb description, but the use of the kitchen is actually off limits. When asked about the kitchen, Carsten was very kind and had no problem with us cooking a simple meal or using the coffee maker and reimbursing him for the coffee pods, but, again, we would have appreciated more transparency from the description.