When we arrived, a man who was not Daniel, showed us to a smaller room (that was not the one we booked) without an apology, as the last guest took the key (why they couldn't offer a spare, I'm not sure). This smaller room had dirty sheets and smelt so badly that we had to leave the door open all night for fresh air. We were offered a half-price refund for this night, and received it. We were moved to the apartment that we booked the next morning by a woman, who when I showed the dirty sheets, just said "they were cleaned."
The room we stayed in was a lot cleaner, thank goodness, and was fairly good for a week in Munich as the location was central. However, there was a lack of care in the design of the place (we had to lift the drier to use it and move it near a powerpoint and there were no teatowels for cooking). Overall, I wouldn't recommend staying with Daniel, whoever he is, as there was terrible communication and a lack of care.