I lived here during 6 weeks.
Castro neighbourhood is very nice: full of history, well served by public transport, full of very happy people and with many green areas nearby.
Elena's place couldn't be better. The house is hugh, the bedroom is big and sunny, and the bed is very confortable. Everything is very clean.
And what about Elena? I am not sure if I can find the right good words in english to describe her: she is a very good person, with very good feelings, she takes care about her guests and she helps them as much as she can (and even more), she is a very sweet, funny, esa y-going and charming woman.
I loved staying with her and I would stay with her again and again!
I highly recommend tris place!