Silvia's apartment is very well located within the old town but close to porta napoli to exit the old town if you fancy walking a bit faster. More importantly porta napoli is also a bus stop for most buses to Otranto, Gallipolli, Porto Cesario etc. etc. and therefore the apartment is very well situated for day trips too.
The apartment itself is very spacious for two people and could easily accommodate more than that. It is also beautiful, comfy and has everything you need. Finally, you can watch the sunset on the terrace in the evening. To sum up: a great place to stay when in Lecce.