First stay at hostel for the rest of my party: 2 teens and my mother (I’ve done this before!)
Took a little bit of mapping to find the location about 0.4 mile from the Jannowitzbrücke station. Then pleasantly surprised by the style of the reception and the welcomed coolness (it was very hot).
Room was a 4-person bunk and appropriate size. Only issue was that we were originally told we were unable to open the windows. Fan given and was not cooling at night at all. Noticed next day that others had their windows open, so asked and was told it was for sound control for neighbors. Pointed out that I had a family group, not partiers, and windows were opened with relief. Next day after cleaning, 2 of 3 windows were closed again. Sigh.
Unfortunately in the heat of our visit this caused issue amongst my family members and I will admit as the most traveled/tolerant of the group that it was difficult. Hopefully better consistent cooling options can be found (and your trip is not at such a hot time!).
Breakfast is reasonable at 5€ per person. But do not wait until after 10 to go (open 07-11:00). The eggs will be gone and no, they do not make more. Gone by 09:30 on second day. Coffee is very good.
Take shower in the AM for hot water.