I had a great stay at the apartment. The room was incredibly spacious so I could even do some yoga in the morning. The neighborhood is also ideal as there are a lot of cool bars and restaurants. The kitchen is wel equipped with cooking utensils and spices which you can also use which saves you the bother of having to buy them all yourself. The bathroom is clean but it's an old house so the shower drain sometimes takes a while to drain the water. I didn't see Ivy during my trip except for the short tour through the house but she was very accommodating and let me stay in the flat a bit longer so I had a place to store my stuff before I left Berlin.
Of course living with roommates means some noise in the night if people come home later but overall it didn't bother me too much.
Would definitely stay here again!