Carolina is a great host and is very helpful with everything you need during your stay. Her place is really nice and very well situated in the Cabanyal district (a few minutes walking to the beach). Also close are the local market with the great Spanish food and many restaurants offering tapas, paellas and so on. The connection to the city centre is great as well using trams/metro.
The flat is nice, huge and bright with all the equipment you need (dining table, terrace with a table, kitchen facilities, sofa, washing machine, dishwasher, two toilets (!), ...).
I definitely recommend this place!