La Fortuna, Costa Rica
Can book Arenal Observatory $0 down via expedia for $1,153 USD, which is two Queen beds. This one is directly in the forest, closest to the volcano, no hot springs.
Can book Arenal Kioro $0 down direct with site for $1,471 USD, which is also large room, two Queen Beds. This is the nicer one with hot springs.
For Day Hot-Springs, can do Springs, Tabacon, or Nayara.
Need to consider also:
White water rafting
Zipline/rope swings
Hikes (mountain/volcano/forest)
Lake arenal
Bijagua
Monteverde, Costa Rica
Amalu A-Frame is very highly reccomended, can book now pay later, $1657 USD for May 19-22
Hotel Belmar, really nice, need 2 rooms total $1741 USD. Includes breakfast.
El Establo, 2 story family suite with 2 king beds, $1,264 USD w/breakfast, $1,112 w/o Breakfast. Fully refundable.
Senda Monteverde, family suite, 1 king, 2 twins, sofa bed, $2,000 USD
Monteverde Lodge and gardens, 1 room 2 queens, $1533 USD
Must do:
Cloud forest hikes: El Tigre hike
Xtremo Park
Savia Forest