This pretty place is situated on a peninsula about 100 kms or so eastwards of Rio de Janeiro. It was made famous years ago by Bridget Bardot and you will see a bronze of her along the waterfront. We stopped here by ship for only about 6 hours on a Monday morning in March 2019 and I spend part of that kayaking from one end of the main bays to the other followed by a quick walk down the main street.
Armação dos Búzios appears to be a holiday resort place for Brazilians though so I would certainly add it to your travel list for a visit if you were close by. We kayaked just off the beaches and between the party boats - yes they have these lovely party boats that seemed very popular with lots of visitors and looked like lots of fun as they sailed around the bay in the sun, and when stopped the guests were swimming off the boat. There is not much more I can tell except it certainly is a place in Brazil I would love to come back to and really wished the ship had stayed longer to enjoy this beautiful place.
Please research this lovely place if you are heading to Brazil as a travel option.