Despite the we didn't meet Denis personally, everything was as described. Svetlana met us on time, she was very helpful in showing on the map all important things to visit in Alicante.
The apartment is quite big (three bedrooms) and living room and it is modestly but sufficiently equipped. There was three of us, but even six people would find themselves comfortably in this place. Everything is sufficiently equipped (kitchen: paper towels, cutlery, pots, pan, glass, even some useful things after previous guests: basic herbs, coffee, olive ect., bathroom: towels, shampoo, showe-gel, even new toot-brushes).
It takes 5 to 10 minutes walk to reach the beach, depending the rout you take.
The view from the window isn't very attractive, because is obscured by another flat, but I in my opinion, during the summer it could be a blessing because it protects windows from the sun.
Overall, I can honestly recomend this place.