Silvia was a great host...
The apartment was very clean, very accurate description and the check-in/check-out processes were quick and simple (locker to get the key). Some neighbors were noisy during our first night (sound reverberates quite a bit in this type of building), but overall we slept well and the apartment was really luminous and comfortable.
What I really appreciated was Silvia's availability and recommendations about the local places to visit and where to dine. The restaurant downstairs (Aquarium) is really delicious if you care for local dishes, so no need to bother with the more touristy places along the beach.
The apartment is well situated (in Santa Margarida, a south district of the city of Roses, built to accommodate French tourists it seems :-), especially if you have a car.
It's pretty easy to park in the street outside, and drive 10 min to the Costa Brava up north at the lighthouse, for a beautiful walk along the sea path and discover the multitude and beautiful coves available there... Cadaquès is about 25-30 min drive, and really worth visiting. I would add the Monastery of Sant Padre de Rodes, which is an amazing piece of archeology from the 12th century.
If you just want to go for a swim though, the beach is located just 3-5min walk from the flat...pretty convenient!