This was my first Airbnb experience, although I have extensive association with homestays through SERVAS and Couchsurfing; so it is not new for me to stay in the home of "strangers." In no way was I disappointed with how I was received or with what my overall experience turned out to be.
Marta greeted me with a wonderful smile and much-appreciated words of welcome. At no time did I have the impression that our connection was formalized or perfunctory, because, essentially, we came together through a business arrangement: her gracious warmth and friendliness were genuine and certainly a part of her inherent goodness and kindness.
The room I stayed in was absolutely clean and well-stocked with what a guest would expect and appreciate: i.e., towels, TV, soap, shampoo and so forth. I was completely satisfied with the security of Marta's establishment, which was located in a residential area where I personally felt safe and confident that my motorcycle was secure in Marta's locked yard.
All in all, I have no reservation in recommending Marta as a superlative host of the highest order.