Lidia was a great host. My stay of 3 months while doing a PhD stay at KTH University was great. Conveniently located in Södermalm, has a few grocery stores nearby, Södra station 1 min. walking distance, less than 10 min. to red line metro station, quiet neighbourhood, and most importantly, a really nice house. I highly recommend staying at Lidia's house. You will receive any help you need to move around the city and valuable indications about landmarks.