Hi
We stayed at the Sugar and Almond apartments for our first trip to San Stef last year. These apartments were offered via the Delfino Blu as the hotel was full and we were offered the apartments with use of the hotel and breakfast - this may be offered to you also if you are thinking of booking for the summer as the hotel is only small and gets booked up very early. The Delfino owener, Costas, takes the apartments for the summer to add to his availability.
I cant comment on the rooms at the Deflino but the pool, breakfast and staff are fantastic. As already commented by others the only drawback was the sunbed grabbing with half the beds having towels put on before breakfast and not used until after lunch.
The public areas and pool are spotless and the staff very efficientt and friendly. Hotel is right on the beach.
The hotel does try and push half board packages - i dont recommend this as there are so many great places to eat in the resort.
I wouldnt hesitate in recommending Delfino Blu or the apartments for a little luxury but there are alternatives a lot less expensive.