You'd be silly to miss out!

Before arriving: great communication and reassurance. Clear support and instructions/guidance. Honest and friendly staff (from both Harry's- yes there are 2!).
During: safety was guaranteed as you are picked up from the airport and taken to the apartment. Lovely welcome weekend with a guided tour which is very helpful to feel a. Safe (which it was) but also to know your local area and more confident to walk around in.
Support and care throughout.
Many chances to be independent and free aswell as have guided cultural immersion a lovely balance of both.
Language acquisition: attending the school was great. IA do a good job of arranging the right level. (Also vid call school teacher before going to Mexico). There are numerous chance to practice and learn spanish. Both Harry's are helpful and supportive. The trips and meals out also help. We were provided with key vocab which helped if you wanted to go out independently.
Accomodation: lovely. Clean - also have cleaner and breakfast chef. Muchas gracias to her :) Local and safe. Transport links were also good as well as attractions and a giant park. Great sized rooms.
Social: great you meet different people from around the world, build friendships, go out with IA and meet other Mexicans that help with your Spanish. Great cooking and salsa class. Also went to see axolotls (my fave - I got it tatted!)
Leaving: again great support taken back to the airport if you wanted to. Even once in the UK they check to see if you arrived safely.
Health wise: again super supportive if anyone was unwell or felt anxious they were there to be supportive and listen. Provide meds and snacks - a personal experience btw.
Note: Carolina is also one of the staff/ leaders and she is so so lovely!!! Just incase you as a reader think it's only male staff. It's not.
As a lone traveller for the first time, not only am I grateful for the chance to go but I felt so reassured and safe. Yes lonely at times but supported and not alone.