Las Vistas beach (Playa de Las Vistas) in Los Cristianos is in our opinion one of the most beautiful beach of Tenerife. In the heart of the animation of Los Cristianos (most important seaside resort of southern Tenerife but also one of the friendliest in our opinion), this urban beach offers all the services that can be expected from a « Big Beach » : year-round supervision, mattress and parasol rental (while leaving space for public areas), massage parlor and numerous shops and restaurants along the pedestrian promenade. The seafront in this area is nice (apart from two towers, the buildings are of reasonable size) and the road is away from the beach (which is quite rare on the Canary Islands).
If you are near this beach and the crowd does not bother you (and the atmosphere a little boosted) do not hesitate, go for it !