Both the flat and the host are great!
The flat is nicely decorated, maybe not as big as it looks in the pictures, but big enough. It is very clean and with everything you might need for your stay.
The place is well located, within walking distance from the beach.
The City of Arts and Science is also quite close, about 30 minutes walk, if you're into walking and close to the hop-on-hop-off tourist bus stop that can take you to the old city center.
Nancy and her family were extremely helpful and friendly.
Definitely a great place to stay in. Highly recommend it!