Sevilla is a wonderful city and we really enjoyed our brief stay. Manuel's mom graciously met us at the apartment despite the late timing of our train. Although she did not speak English, she was able to communicate all the necessary information. The wifi was strong, and it was great to have water, tea, coffee, milk and other items for a simple breakfast stocked for our use in the kitchen. The beds and pillows were really comfortable - we have to find those pillows before we leave Spain!
The apartment is located in a very accessible area, close to shopping, bars and restaurants. Five minutes walk will get you to frequent buses (13, 14, and circular route C5). If you like to walk, you can reach the Alcazar, Cathedral, Parasol and other attractions in 20 minutes.
Both Manuel and Silvia have been very communicative and easy to reach despite being on holiday themselves.
I recommend their place for small families and friends traveling due to the 2 bedrooms and 3 beds. Not recommended for those who don't navigate stairs well since there is no elevator for this 2nd floor apartment.