I travelled to Barcelona with my mum, sister, two teenage nieces and my 8 month old son. We all stayed at Anna's place and really enjoyed it. As the flat is really one big room divided into different living spaces you are very close the whole time, but for us that was part of what made it really cosy, as we don't get to spend much time together in our everyday life.
Anna was very friendly and helpful and took care to explain everything to us and the flat was homely and well equipped. We really liked the neighbourhood and the local food shopping facilities, we were especially thrilled to find an organic food market just down the road as they are hard to find in Spain.
All in all a very positive experince!