We stayed 1 night at Mario's airbnb. Communication with Mario was excellent, everything went well. The apartment is not the most luxury airbnb we had so far but very practical and everything advertised / needed was available. The highlight for me was the traditional Italian moka pot and brewing my own coffee :) Look up on youtube for 'how to'-instructions and try it for yourself!
The location of the appartment is more than OK. At walking distance (if the weather is good) from the central station (15-20 minutes) and Citta Alta (+/- 30 minutes).