I was unaware of the existence of Ross until I moved to Vegas. It was while shopping at Target that I noticed the store just down the way. I figured I would pop by and see what they had to offer. Boy, was I in for a surprise! I now visit Ross on a weekly basis, searching for good buys.
The store is iffy on cleanliness. I think it depends on the time of day you go. I've seen it in shambles with merchandise everywhere and I've seen it relatively clean and organized. The employees aren't enthusiastic by any means, but they will help if asked.
The main reason I shop here, though, is for the deals. They have tons of linens, clothes, shoes, and home decor for great prices. I dare say 90% of my home decor is from Ross.
It's hit or miss as far as finding what you're looking for. If you're just in to browse though, you'll more than likely walk out with something.