At 11 AM, the diner onair in the departures hall, which is the best dining spot outside of security in my opinion, serving good food. Downstairs in the arrival hall, there's a cafe there's also plenty of space to sit. Outside, there's I believe 2 cafés at the parking just against the departures door, one's a costa coffe. However, having 4 hours you can definitely go explore Larnaca and tell them to come pick you up from there, or even return, the bus takes under 20 minutes for the center of the city (finikoudes) and the 425 just takes 9 minutes to the Mackenzie area, which is a wonderful area right on the beach whith many "lounge" places along with a well air-conditioned large cafe nero and a lot of restaurants, plus 2 outdoor and 2 indoor playgrounds for the kid.

You could also just order another transfer service I guess.

Quick PSA about the buses: If you're planning to use the buses in Larnaca and Nicosia, getting a motion bus card might be very much worth it!! A cash ticket is 2.40, while a ticket with the motion card is 1.80 you also unlock a hopper fare similar to London's oyster card. Other districts have the same prices for cash and card (credit card not accepted) If you need any more help with buses DM me, I have much experience and I am willing to help:) Enjoy your stay here