"do not disturb"

I’m traveling this week in Mexico helping to solve an engineering problem for a company here. They made arrangements for me to stay in the nicest hotel in the area which also has a restaurant where it is safe for me to eat and drink anything. I am very grateful for this. There is still some cultural differences however.

Now that it was Friday night and I planned to catch up on sleep having not slept at all the night before I flew out and working ten hour days in a 95 degree hot and noisy factory this week, I put the "do not disturb" sign on my door last night to ensure housekeeping will not wake me up, right?

I got an insistent knock on the door at 9:45 this morning as well I could hear they were knocking on many doors leading up to mine and I remember many "do not disturb" signs on other doors as I walked to my room last night. I opened the door and pointed to the sign. The maid was checking to make sure I really meant just do not disturb or if I wanted my room cleaned now or later.

** Note that in this private courtyard this morning starting at 9:30, there are several men working on trimming the trees, pounding something making a clang, clang, clang noise for the last forty minutes, as well as they are talking and yelling to each other some of the men right outside my patio (the whole room has windows/doors facing the courtyard). Couldn't they do this during the week? As I have written this account, a sprinkler has been set up now and forceful water hits my windows about two feet off from the floor every 90 seconds.

Hmmf.