I stayed 3 days in Silvia flat. It is located around 2.5km from the city center, or 30min walk, but I recommand you to take the bus because around this is mostly a residential area so not much to see. Buses are very common, there is one stop very near the flat, that goes directly to the train station , and also close to the city center. And another one 5min away that goes directly to the city center.
The apartment is nice, it is on the ground floor, the bedroom is big, there isn't a kitchen but in the living room there is a fridge, coffee/tea machine and a microwave so enough to have a quick meal.
When I arrived in the apartment, the fridge contained few little bottle of water, one little bottle of fresh milk, also cereal box on the table, with different kind of jams and some nutella, and also some biscuits. It was lovely to have this kind of attention, thanks to that I had my breakfast there every morning before going to visit the city !
At one time I had a problem with the oven which was not working at all (because of the timer button which is broken), so I couldn't eat my pizza, I sent a message to Silvia and not long after they respond to see what's going on, they came to see the oven, unfortunately it was not fixable, so Silvia went outisde and bring me a very nice icecream to fill my stomach, it was very nice of her.
I had a great stay in Silvia's place, I recommand you her airbnb