Does Siesta time in Panama affect business travelers?

I haven't been to Panama for quite some time and now there's a chance I may need to spend a few days there to service a software client.

I remember that a large portion of the afternoon is dedicated to the 'siesta', and indeed I found this description...

A midday siesta is practised in many South American countries due to the heat. Tourists in Panama will find that shops and businesses are often closed during these lunchtime hours and should conduct their daily business either before or after siesta.

Source: Panama Travel Guide

I expect to stay in a hotel and to be working at a private residence during the day. My body clock will be on UK time and I will not be particularly sleepy during the afternoon. What can I expect as siesta time approaches? Will the client quietly disappear until siesta finishes? Should I return to my hotel and wait? Should I expect to be offered a spare bedroom?

Question: What's the etiquette for a guest who's on business in Panama at a private residence when siesta time approaches?