We visited 10th - 17th September 2014 with our 3 year old boy. We rented a car (free parking at the hotel was an unexpected bonus!) and it was great to be able to get around to other nearby places so I would definitely recommend doing the same! Although the drive from the airport (Murcia San Javier) was around 2 hrs, but pretty much all motorways so pretty easy but long after a flight.
Hotel was clean and staff were friendly, as we went slightly out of season the hotel was not too busy so we were always able to get sunbeds at the pool and a table in the restaurant. The food was probably the worst thing about the trip, it was all a buffet which wasn't properly labelled so was never really sure what anything was! Also on multiple occasions the meat looked really undercooked - I got a chicken breast that was raw in the middle!!
Aside from the food the hotel was great, lovely swimming pools, close to the beach and lots of other things to do nearby like minigolf and bowling. The area is probably very popular in high season, but it didn't seem overly built up and touristy which was really nice. My top tip would be make sure you brush up on a little bit of Spanish as the staff in some of the restaurants and shops nearby (and one waitress in the hotel restaurant) didn't understand any English, luckily we knew enough Spanish to get by and most of the staff in the hotel spoke English. But it might have been a little challenging outside of the hotel if we didn't know any!