We spent 16 days at Mercedes's place, and the photos don't really do it justice: it was much more spacious than we thought! The space is very easy to settle in, the bed and sofa bed are both really comfortable, and the internet speed is just fantastic (100MB download/30MB upload). Plus, it is within walking distance (10mins) to the centre and very close to at least 3 big supermarkets.
Very much recommended—and Mercedes was a really welcoming host!