Me and my partner had a wonderful 4 month stay with Karl-Heinz from August to December. The apartment is very quiet even though it is so central. It is facing the inner yard and not the street, and the rest of the building is only offices so no neighbor is making sounds late at night.
The location is excellent, there are many great restaurants and bars around, the area in general has a good and energetic vibe, and the river Isar (just a couple of minutes away) allows for beautiful walks. The U-Bahn is just around the corner and there are several options for grocery shopping nearby; both budget alternatives and organic stores. Just below the apartment is a great shop that sells organic soap, laundry detergent etc.
The kitchen is small but has what you need; a dishwasher, microwave, 4 boiling rings, and the most basic equipment. No oven and we missed a few things (eg. mixer) in the beginning, but bought them and left them in the apartment.
The bathroom is also small but fits both a washing machine, towel dryer, and iron board. When it got cold outside we struggled a little to fit the drying rack for the washed clothes but got used to it after a while. When it was warm outside, space was no issue at all, as the extraordinary balcony provided more than enough space. It was warm outside all through October, so the highlight of the stay has been the balcony and the large windows that make the apartment light and feel spacious.
There was enough storage space for two persons with clothes and things for 4 months.
Karl-Heinz has been a great host: Whenever there was an issue with the apartment Karl-Heinz made sure to fix them as soon as possible and without any complications. The apartment was clean and nice when we arrived, and Karl-Heinz took care of cleaning after we had left.
The only downside for us was that it felt a bit cramped to live two persons in such a small apartment with no possibility to close a door, but we knew this in advance. For one person, this apartment would have been more than perfect. If we were to come back to Munich we would not hesitate to stay with Karl-Heinz again.
To summarize, we were very happy with this light and central apartment that is well-equipped despite its size.