All in all, pretty good for large groups of people.
A little rough around the edges, the showers and toilets leak water everywhere, and the pillows, and mattress are pretty stained from use… but the sheets/linens are clearly washed and clean.
The 4 bunk bed room the guys said the beds were pretty hard/uncomfortable. Maybe more suitable for children or people under 25. Ha!
The “free street parking” is a little misleading. The free parking is a 3 minute drive away, but it is 2€ an hour M-F 9-6pm. Free evenings / weekend / holiday in the area. Also, if you are travelling from other countries to Berlin - make sure that you have an emission sticker (5€) otherwise you get a 100€ tickets because this is a low emission zone in Berlin.
Alexi was a good host, accommodating, and made sure we had everything we needed. Check in and Check out was ok. The front gates to the courtyard can pose an issue getting in and out with your luggage, so try to arrange in advance.