Staying in the magic cave was a great experience and we're very happy we chose this place for our stay in Riga.
It is a highly atmospheric place and we loved it.
However, you should be warned that the comfort is a bit minimal (it was quite cold and wet even in June, and the kitchen's equipment is a bit scarce).
Knowing that, though, I consider this apartment, which is very central, is excellent value and I would definitely recommend !