Susan and her husband are very friendly hosts, ready to help you with local recommendations and what not.
There is free parking in the street and the bus to the city center is right in front of the house (it only takes 10-15 minutes depending on where you need to be and goes 24/7). The bathroom is shared with the other Airbnb room (and the hosts too we think), but that was no bother to us.
We highly recommend the place if you want to visit Edinburg and have your own car!