Staying at Anna's appartment was great! The location is the best you can wish for - really is the very heart of Madrid. The appartment is small, but cosy and extremely handy - got everything you might require. Anna is a very hospitable and very responsive host. Unfortunately we did get a change to meet in person, but communicationg with her was nice and easy. It's recommended that you speak at least a tiny bit of spanish though =)
All in all, we had a very positive experience and will highly recommend Anna and her appartment to anybody travelling to Madrid.
Anna, muchas gracias por todo!