Very good full-immersion program

I am a 56 year old guy from Texas who has been taking Spanish lessons off and on for over 20 years. Wanting to become more comfortable with Spanish via a full-immersion program, I searched Google and found Tico Lingo. After spending a month in Costa Rica, my Spanish skills improved significantly.
The program is organized well from start to finish. A person picked me up at the airport, drove me to the house where I would be living and introduced me to my Tico family. The family was welcoming, the room was comfortable, free WIFI was available, the meals were good and the atmosphere felt safe. I opted for one-on-one lessons at Tico Lingo which is a converted house in the suburb of Heredia. Most of the other students were in their 20s, but the program seems to work for all ages.
There is lots of free time outside of studying for whatever a student wishes to do. Rather than join others on organized weekend tours, I explored San Jose and the suburbs. Very little English is spoken outside of San Jose - which is good. It rained every single day, so having an umbrella was a necessity. There are good restaurants, excellent coffee places, local gyms, etc. The people in Heredia are generally nice and helpful for travelers. My main method of getting around was walking, but Uber also worked great.