There are lots of providers in the Detroit area to choose from, but if you are staying in Windsor I suggest you look for Windsor providers especially if you want them to come to your hotel.  There may be a few Detroit providers that may come to Windsor....but unless they really know you it is unlikely they will make that trip.  
Btw, there are a few providers in Windsor that shouldn't have a problem coming to your hotel.  So I suggest you do a little research for providers in Windsor.