I highly recommend Alexander's place! The apartment's location is excellent, you only have to walk a few minutes to catch the U-bahn to the city centre and there's numerous stores and restaurants in the vicinity as well. Because it is so close to the U-bahn however, you can hear the trains passing every so often (this didn't bother us, but if you're a light sleeper it might be a problem). The room is exactly as described and you also get your own space in the kitchen, fridge and bathroom to put your things. Alexander himself goes above and beyond to make sure you have a pleasant stay: check-in was easy and he's very responsive if you have questions.