I found a very interesting post http://es.erasmoos.com/ciudades/erasmus-salamanca.html on things to see in Salamanca has an interesting summary of the typical expenses of a student in Salamanca. Copy the image so you can see the details:
As I said in previous posts, in rooms and apartments that we propose will not have the expense of other (water, electricity, internet), as all costs are included in the price.
I hope you come well to calculate the money you will need.
If you prefer to share a flat with other students or rent an apartment or studio for your stay in Salamanca, do not forget to check out our other posts or visit the websites we recommend: apartments-salamanca.com and homesfortravellers.com