Marius & Anita's place is a big, nicely renovated 1840 house split into apartments. I stayed in apartment 4 and was very surprised at how huge the rooms were! Kitchen is modern and functional, as is the bathroom...
The only confusion I had was that the "front" door is actually around the back, but I rang Marius and he steered me in the right direction.
I highly recommend it as a great place to stay and only 15-20 minute stroll to beautiful Salamanca!