This post is not to ask a question but to provide general comments for prospective travellers to Nicaragua. I recently spent 3 weeks travelling around Nicaragua by myself (male) and with just a limited amount of the Spanish language.
My thanks to Cincinnatalie, Byronortega and Likeeveryoneelse. In the months prior to my departure, the forum and your comments were very helpful.
My 3 weeks were spent in Granada, Leon, El Castillo and the beaches of Popoyo and Guasacaste.My goal was not to cover as much ground as possible in the time available, it was the opposite. Though I did not get to a few spots (Corn Islands) that I would have liked to, my priorities were relaxing, wandering around and watching the world go by, all being fully accomplished.
This was an excellent vacation and I had a very positive experience. People were very friendly, both residents and fellow travellers. There were several times that people went out of their way to assist me. I never felt that I was in danger and the food is generally very good, particularily in Granda.
Granada has a large expat community and there is plenty of english used in the various restaurants / bars on or near the Calzada. Although the city is on the lake their beach area does not have much development. I recommend that you plan any beach time on the Corn Islands or the various beaches along the Pacific. This is a great place to do a few local tours, relax and meet fellow travellers around the Calzada.
El Castillo is a one street town along the banks of the Rio San Juan. There are various nature tours but spending time with your feet up and a book is also good in El Castillo.
Having to share a 2 mile long beach with (maybe) 10 other people is an experience that is becoming very difficult to achieve, however it is still possible in Popoyo.
Leon is larger than Granada, but there are fewer tourists or items in town.