We thoroughly enjoyed our stay at the Downtown Apartments Berlin - the apartment was incredibly clean, modern, well appointed and could not be in a better location for both transportation options as well as walkable restaurants, bars, shopping, and sights right at your doorstep. Comfortable beds, great bathrooms and kitchens with all you need as well as lovely outdoor space.
We did have some initial issues in that based on the listing we had expected the laundry to be within the unit and was actually a laundry room in the basement and that the air conditioning was only one unit in one of the bedrooms. With that said, the staff did a wonderful job of trying to address our concerns and was friendly, helpful, and communicative with us throughout. While they were unable to find another unit with laundry or air conditioning throughout, they provided several additional fans to help circulate the air and even went so far as to offer to help with our laundry while we were out sightseeing! They truly made us feel welcome and went above and beyond to make us feel comfortable and address any concerns we had.
One other note - we happened to get a unit on the first floor and as there is a bar on the street level with a patio (very convenient by the way!) there is some slight noise and smoke in the evenings (until they close the patio at 10 PM). This is really only noticed I believe as a result of being on the 1st floor and depends on your situation - we were out late most nights and are sound sleepers so it was not an issue, but it was noticed and could be an issue for those more sensitive to noise/families with earlier bedtimes. There is also a tram stop in front of the building which is VERY convenient, but did add a bit of "city noise" as well. Again, we were coming from a big city so it wasn't that bothersome to us, but I could see people more sensitive to noise simply wanting to ensure they are on a higher floor where I don't think it would be as noticed.
All in all, this is a great stay in Berlin in a fantastic neighborhood. Highly recommend!