The resort really caters for a wide range of tastes and price ranges. The biggest collection of restaurants is around and close to the Marina. The range is from simple tourist snack/dishes through to higher priced restaurants. Don't forget to check out the map for locations. There are several Italian,Spanish ( seafood,grilled meats,Tapas). Given that Cala en Bosch is a 'mass tourism' resort for Menorca's standards there are a lot of international guests which is reflected in the food choice.
At Cap D'artrutx there is a small commercial centre with some Bars ( Mestral Terraza, Big Apple, 2 Rocks Irish bar, )Â catering to the villas there. The majority are located all around the marina so it just makes sense to stroll a slow circuit and then decide which one is 'your scene'. There are enough that you will find something to your liking. Also head to Ciutadella early evening.
Some bars stay open until later but there are no nightclubs. Many bars have mixed offering sports tv earlier on with Music for late nighters.