Hello @sergiomendes,
Nice review and it seems you made a good choice. It's ok to not have a plan or expectation, and just go with the flow.
It's always a tricky one when taking photos inside establishments, such as coffee shops, restaurants, or hotels because you never know who you might offend, as these are common places for people to meet (sometimes in secret). It's a little different and easier for me doing street photography... You still managed to capture some nice shots anyhow, and now I'm craving for a latte:)