This is a special place: It's not only a B&B, is an experience. Now, it might not be for everybody. I liked the uniqueness of the space, the bathroom and the price. However the location is really not great (close to San Telmo but also to Constitucion) a renowned bad area in BA. One had to be particularly careful at night. You will hear (at least I did...) the cock at 06:30 in the morning...
So... good value, but with a couple of things you should be aware of.