Huge place in a great location. Once you get the hang of the S bahn ring and U2 line plus tram (all close by), you can get anywhere in Berlin.
Excellent place if you have children as the front room with the loft bed can be closed off from the living room and main bedroom for late night Netflix viewing (an unexpected bonus!). Comfortable mattresses and okay pillows.
You can live here like it is your home. The kitchen has plenty of crockery and cutlery, pots and pans. The cupboard is well stocked with spices, tea and other bits and pieces that makes it easy to cook for yourself but there are also several places to eat on the main street nearby. We would have happily stayed here for longer than 4 nights. Because it is on the ground floor it was quite cool on hot days as long as you keep the shutters down, which unfortunately means there is not much natural light in the living room, but electric lights are good. Other rooms are brighter.
Great washer and drier too, with laundry powder provided along with shower gel. We didn't meet Marcus in person but communication via air bnb was good, and Britt meet us at the apartment at an agreed time. It all went smoothly.