Mid-range travelers are the luckiest of the bunch, as paying a little gets you a long way in Nicaragua. Budget travelers will get by fine roughing it, and luxury vacationers will be happy with their high-end resources, but mid-range spenders should enjoy the best of both worlds. Good (and sanitary) food, clean and comfortable accommodations, as well as tours and transportation should all be up to par at this level of spending. As a mid-range traveler, however, you will have to be flexible. For example, some small towns may only offer a grungy hospedaje or high-end hotel, and you will have to decide which way your budget will swing. 
Travelers in this mid-range category should plan to spend about $30 - 50 a day, though cutting costs here and there, or splurging once in a while may change that number. If you set a planned budget and wish to stick to it, mid-range travelers have it easy, in that there is liberty to cut costs relating to transportation (try mini-busing around town instead of taking a taxi), food (grab breakfast at a local market) or housing (a night or two in a dorm will save a bunch). By giving and taking from some of these areas, you make it financially feasible to adventure out and take that scuba-diving class you wanted or a guided tour of the volcanic lowlands. 
As Nicaragua’s tourism is quite structured and developed, it is easy for mid-range travelers to book all their plans online, either at home or from Internet cafés once in transit. Often it is the mid- to higher-end establishments (tours, hotels, etcetera) that have resources on the web, so be sure to take advantage this planning possibility.