What is a 'boutique hotel'?

thxWhat is a 'boutique hotel'?
they have those near where I live in East Greenwich, RI. I'm sure they're everywhere. they are very small, expensive hold-overs from back in the day when people wore fedora hats and said things like, ';dame';, and ';down to the hoosegow with you!';. they are expensive places that rich people go to- I assume the accommodations are excellent.What is a 'boutique hotel'?
Fancy.
A trendy hotel with Oriental ';Room Service';...
IT IS A HOTEL THAT CATERS TO AN UPSCALE AND DEFINITELY RICH CLIENTELE AND OFFERS ALOT OF EXTRAS IN THE SERVICE DEPARTMENT .
A small, independent (as in not a chain) but trendy hotel.
They are smaller than then the chain hotels like the Hyatt or Hilton. I think that they also have fewer than 100 rooms and try to cater to a certain group of people like young hip business travelers