We have Milo groomed at The Jumping Bulldog located at 28-10 23rd Avenue in Astoria. The groomer is Charlie Jarrett. You can read about him and his services here:
Services
We have taken Milo to Charlie 4 or 5 times and have always been pleased. Milo is not a cooperative client but Charlie is very patient and Milo is gradually becoming less difficult as he gets to know and trust Charlie.
Charlie only works on one pet at a time so you do not have to worry about Maxi being caged or forced to wait for hours. This is very important to me as I could not stand to leave Milo somewhere strange for an extended period of time.
We usually drop Milo off early on a Sunday morning and he is ready in just under an hour, looking, feeling, and smelling terrific.
Hope this helps. There is a groomer on Broadway around 44th Street but the shop looks old and gloomy from the outside, although I have no actual experience with them. Here is a link to reviews on Yelp:
Pampered Poodle Palace - Long Island City - Astoria, NY
Good luck finding and choosing a groomer for Maxi.