I stayed at the Hostel Pangea on my first and last nights in Costa Rica, arriving late and leaving early.
For both night stays, it was the airport shuttle which swung it - $20 if alone (cheaper than a taxi) and $11 if 2+ (which you find out at the time). Both journeys I ended up sharing - though I would like to have seen the $11 reduced given the 6-8 people sharing the trip. Still, it was cheaper than a solo taxi.
I stayed in a private double room with shared bathroom. No storage (not really needed for 1 night) and pretty dingy. But it did the job, and the showers and bathrooms were clean.
My stay on exit of Costa Rica was swung by the fact that the price of the 1 night stay + airport shuttle was the same as staying closer to the airport in the linked Costa Rica Hostel Network in Alejuela, but the Hostel Pangea had more facilities - especially the clean pool/sundeck and decent roof bar/terrace with PCs and Wifis etc.
The local area isn't great, and I wouldn't recommend walking outside alone at night, but if you're only there for 1 night the facilities mean you don't really need to!.
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