Hi there,
San Jose city would be a great place to relocate. The reason I say this, it is because the cost of living is one of the cheapest in
Latin America.
Food, entertainment, health care, etc is very affordable. Getting around in the city is inexpensive and buses only cost around 45 cents per trip.
I managed to find a few accommodations located in Sabanilla, San Pedro (around 15 minutes bus ride from San Jose). It is a
two bedroom and rent is $400 per month for the two of you.
Some jobs I would suggest to do are: teaching English, being a tourist guide, working as receptionists in hotels, etc.
Other sources where you can look for jobs are the local newspapers such as The Tico Times or browse the main Spanish-language newspapers.
Hope this helps
VacationBuddy