Jeffrey Chongsathien
Google
Love this place. Delicious pastries, great coffee, open at 6am for early birds, fair prices, classic interior but what really made it for me was the charming service, comfortable helping tourists with limited English and limited Portuguese. Bonus points for providing a water dispenser to wash down the coffee with.
The ordering system is okay once you work it out. Order at the counter, take a seat at the back, they'll find you with your order and give you an ID card for the bill. If you want to order more, you go back to the man overseeing the seating area, or the counter, with the same card. You pay on the way out, handing the card to the cashier at the exit/entrance. They don't label the baked goods, so if you're not a native (or even if you are?!), you're best taking a photo, showing it to the counter staff and saying the quantity you want (in English, was fine).
I never used the toilets, so can't comment on them.
It's a great place to get up early for, charge up, relax and get ready to attack the day, especially if like me you don't like hotel breakfasts (they're all the same and it's one less opportunity to go somewhere new). Also, getting up early in a hot country while it's cooler is a good idea, plus you can avoid a lot of crowds of tourists.