Nonexistent. Any age the people are, any area of work, the concept of service does not exist. The extreme is to go to tourism office and ask for something. Bus to go there. You receive a piece of paper. No info if there other means to arrive there, trains maybe…
Western tourist: checks the mattress how old they are; checks the toilets cleanness.
Bulgarian tourist: is there toilet in-suite? is there satellite (not cable) TV? can I see my car from the window?
In towns we see old people seated in a park. Eveything normal except that they have at their side a weight and a small price in case you want to use it. Concurrency can drop prices to 5 euro cents.