Nicaragua has a good array of activities, everything from northern coffee mountains in Jinotega, rum factory tours, volcano surfing/hiking, old colonial cities, deep sea fishing, and some great beach/surf spots, Guacalito, Rancho Santana, Granada, Leon, San Juan Del Sur, etc.
I'm there monthly for work, speak no Spanish, always do my own rental truck and my own driving, have never had any problems in the last five years.