First of all, Brad was an amazing host. Although he was away during my visit, he made everything perfectly ready even before my arrival and gave instant solutions to issues I encountered. I had no problem at all seeing and enjoying Sevilla thanks to him.
Secondly, about the house, it was beyond expectations and I'd say better than 4-star hotels I stayed in Spain throughout my trip. Location-wise, it's only 3min or less walk to Metropol Parasol, where you can see picturesque views of sunset. Other areas are all within walking distance (10-15min walk to the Cathedral and 15-20min walk to Plaza de Espana).
I walked to all locations and did not take public transportations during my 3-day stay and recommend walking in Sevilla to everyone reading this review - each and every pathway is just so great..
Lastly, there is a set of manuals for the visit, well explaining how to use the house - if followed well, then you will be able to use the house to your best advantage.
I thank Brad for helpful tips, friendly welcome and all the assistance he gave and would definitely stay at his place again if I get to go back to Sevilla.