Costa Rica destinations

Well, Heredia and San José are almost the same, little cities, many people, and good acces to basic requirements, good hospitals , many stores and malls, universities and theaters; Santa Ana is a Beautiful place and there is where the richest people in Costa Rica lives, it's... better, safety and you will be close to the best medical services and luxurious spas, hotels and clubs, but its a lot more expensive.
You are right, we do not have four seasons just tow: dry and rainy, each of them are like six months each but there is nothing serious like floods in you are going to live in any of those cities, the highest temperature could be 30ºC and the lowest 12ºC. Pretty good!

Santa Ana and San Jose are basically all one big metropolitan area together. Yes they are separate but they are both in the same area. Heredia is further out about 30 mins from San Jose. All the cities are not what you might called developed cities. Like lets say Panama City. The housing is very modest and there is barely if no road organization or signage. So it can be extremely confusing driving if you don't know the area.
If you are wanting to move to Costa Rica I would recommend somewhere in Guanacaste. There it's more tourist friendly which means it's safer. It also doesn't rain as much as in the mountains. You also are closer to the beaches and still have all the ecotourism you have near San Jose. And don't worry about an airport bec there is a small international airport in Liberia.
If you need anymore information please let me know. (moderated: no ads please)