Highly recomended!
There is decent brakefast for only 10€.
The room is small and dark but at the same time clean and cosy. The bathroom has 2 sinks, small bath/shower, bidet and toilet. The location is also really good; 7min to metro; 10min to Plaza de Espania but it is not loud. The whole hotel used to be a theatre and they have kept that style which is lovely!