Took my m5 here the last few times I had a car wash. Had a great experience overall, I chose the 'Arcadia' wash which for what they do (hand wash, interior, windows, tires) is a great bargain compared to other area hand car washes.
The place isn't the fanciest, but I will tell you the service is top notch and they really do a great job of inside-out cleaning. Would highly recommend to anyone. As others mentioned, only downside is a longer wait, but worth it for the extra mile they go to clean the car.
Last time I went, had some real bad wheel grime/buildup and they spent literally 15 mins scrubbing all the wheels to get it clean!