As other reviews mention, this place is located above a bar. The noise referenced in the posts is not street noise - it is the bar/dance club right below. They play loud heavy bass music from 11 or midnight to about 9am, at least they did on a Friday night. I was alright because I had a cold and so took cold medicine to breathe and it helped me sleep. I think this place is great if you intend to go out and enjoy the city all night long. Also, Christian is kind enough to hand out earplugs. If you typically find these sufficient to block out bass, you will be fine.
Both Christian and Anna are excellent hosts. The place is clean, the bed was comfortable and clean, and the showers had hot water.
A quick note to asthmatics - the post indicates no smoking, but someone smoked inside the house while we were there. Probably our hosts were unaware.
Thanks to Christian and Anna!