Thank you for your reply!
It took us some time to answer to you as we wanted to talk to Ulises and others.
Ulises believes that he gave you all the information he normally gives to all the other guests, who find it very helpful.
Besides this Ulises cooked for you on your request, which he normally does not do for other guests, so he spend even more time with you and since he is very talkative I don't understand how he might have not mentioned a lot of details.
Regarding the US money, the rate is not good in Cuba and it has a tax on exchange. The guests before you still brought US money and asked us for help, but it is not a practice we have at the house.
Our house is "casa particular". It was allowed to ordinary people some time ago to rent rooms to tourists in the houses they live. Normally the people who book this kind of casas, prefer them exactly because they can be closer to the every day life of ordinary Cubans, meet other people, etc. I am sorry that this was not a nice experience for you!
Anyway, I am glad that you had an overall nice time in Cuba and hope you will be visiting again!
Rayna, Oscar, Ulises, Teresa