I've never boarded a cat, we've always just had someone come over to take care of them.. But we board cats where I work. I'm not sure on the current pricing.. Probably around $15-18/day. If I had to board Kitty, that's where I'd take her. They have three level rooms that are cleaned out three times a day if needed. We have a vet up front so if anything happens, it takes no time to get them seen to. The same person takes care of the cats most of the time, so that she always knows if someone isn't eating, drinking, using the box, etc. They have a window most of them can see out of from their rooms, and a fish tank most can see too. They get to play in the room while their rooms are being cleaned if they are friendly. I always go in before I go home and love on the kitties for awhile.
I'd say to definitely look for a place that lets you tour the area they keep the cats in. Oddly, most places around here no longer let you see their kennel areas. That makes me suspicious of the conditions back there!