I love the fact that Marion's flat is near the beach and so made it easy for me to get the the beach as I had sprained my ankle just before going to Spain.
There are bars and restaurants near by I can recommend, Cafe Bombo on Calle Reina for breakfast.
It also has great public transport links, it's near several tram stops and I can also recomend the bus 2 which you can get just oustside the flat to get to the port area where there are lots of bars and restaurants.
The flat is bright and spacious, and I would definitely come back.