First thing first: Location, location, location! You seriously cannot pick a better spot to stay in Copenhagen. Our entire time there, we only took the metro once for a day trip - otherwise we literally walked to everything we wanted to see and do.
Second: Beautiful home! It's very spacious and the furniture is as luxurious as described. My family of 8 adults came for the holidays, and had plenty of space. We loved the long dining room table and the comfortable communal spaces in each room make it very nice to enjoy each other's company.
We were a bit worried about only one shower between 8 of us, but we made it work. There is more than enough hot water and the water pressure is very good, so it's just about timing your showers.
One thing to note: Read the listing thoroughly so you know what to expect in terms of amenities. There is no hairdryer or coffee maker (although we did leave a French press, so you may be able to enjoy that!) and while there is a washer and dryer in the unit, you will not have access to it during your stay. Also know that there is not a working elevator, so be prepared to carry your luggage to the second floor unit.
Merete is quick to respond and check-in and check-out were easy. I think many in our group would like to come back to Copenhagen in the summertime, and if we do we'd definitely consider staying with this host again!