The value of the apartment depends on what you're looking for. It was my wife, our small dog and I. The couch could be used as a single bed, but if a 3rd person stays it would little crowded. It may be OK for young people, but if you're a little older like we are, and being used to space, you might find it tight if more than 2 people stay. Granted, we live in the USA, in a spacious home and this may color my view.
I found the mattress very hard, and it exacerbated my aches and pains. Diane said that I was the first person to comment on that, and she wondered if a pillow top would help. It may.
I'm a side sleeper and have a mattress made specifically for side sleepers, so I'm a little spoiled when it comes to mattresses.
We loved the location because it's so quiet. One of the things I liked best was that the living room door opens to the parking area. A very quiet area, with rocks, where our dog would go out to go to the bathroom. We would go in and out that way a lot, unless we were leaving the apartment. Walking out from the living room to the parking area was epic because the first thing one hears is the Mediterranean. But please note that if you don't have a car this location may not be ideal since it's a little off the beaten path.
A few steps down, there is a pedestrian path that runs along the coast. Epic!