We have in the past, both myself when I used to be a host and now for UpHost clients.
A bit different in that regard since rather that asking for a commision, I used to and still do ask for a discount for the guests, this allows me to promote the service as an added benefit of staying in an Airbnb that is managed by UpHost which also helps our brand.
A conservative one would be 5-10% but you could get something even higher, perhaps 15%.
The approach itself is done in such a way that first we demonstrate value then we ask for the discount, and example would be:
_" Hi there, I have x number of short term rentals in the area and I’m looking for a local laundry/ restaurant/ bar that I can refer customers to, I want to make sure it’s beneficial for both of us so what I’d like to propose is that for the next 2-3 weeks I will refer as many guests as possible, the will have a coupon code ( you chose that either printed or a pdf/ image the guests can show on their phones) and you provide them with a 5% discount. _
If this works in terms of bringing more customers and receiving better reviews (yelp, google , or other services but you’d encourage your guests to do so) then I’d like to increase their discount to 10% if it is something that benefits both of us"
I would strongly recommend also knowing the business before hand, as in a restaurant you yourself enjoy already or a dry cleaner that you’ve used in the past so the quality is not up for debate.
The benefits of this approach would summarize as follows:
local discounts available to your guests (something listings in your are would rarely be able to offer)
local businesses working alongside you, which in terms of networking never hurts, we have even held events for birthday parties for large groups of guests ( 4+ their friends)
an added benefit to your listings as if your guests already enjoyed this service and left a good review for the business they’re far more likely to both leave a good review for your listing & refer their own contacts should they be travelling to your city in the future.
lastly but this is totally up to your own discretion if you think i’d be proper or not. You yourself can use the discount of this services which in turn will save you money, I have been welcomed by a number of local restaurants to have any lunches & meetings at their place, since in turn it will bring more businesses to them and I get to enjoy a great meal with a generous discount.