This is an amazing place to stay in Berlin!
I traveled with my family (we are 4 adults) to Berlin and we stayed in Michael's place for 3 days. Our flight landed super early the first day, so we got there at about 9 am. I was worried because I know that the check in has to be made at 3 pm, but Michael was super nice and let me get into the appartment earlier. It is located in a really good area, the Tram is literally in front of the building, so it's SUPER convinient to get easyly anywhere.
The appartment is incredible, very spacious, well designed and clean. It's super well equiped! You can find lot of handy things everywhere. If you have kids traveling with you, this is going to be paradise for them. The children room is full of toys, books, stuffed animals, and even some clothes in case you need them. It also has a tittle table with a small chair with perfect size for them. There are even energy plug covers to prevent toddlers to insert things there, he has think about every detail in his place.
All beds are super comfy and the appartment is absolutely quiet, you won't hear ANYTHING, all the doors and windows make some kind of seal that isolate every room, wich is super nice!
You will find a big TV, nice music, lots of maps and a big sofa. The bathroom is super clean, everything worked perfectly there.
Eventhough I didn't have the opportunity to meet Michael personally, I can certanly say that he is an amazing host. He was super attentive and answered my messages inmediately, he gave me a lot if recommendations and tips too. He was so charismatic and kind!
We absolutely loved staying here and I really hope I have the opportunity to come back, don't hesitate to make this choice!