We use the 2" Big One memory foam toppers on all our beds at our lake house and cover the whole kit-n-kaboodle with a Serta Black mattress cover.The 1" is also on sale if you don't want to go quite as thick. $10.44https://www.walmart.com/ip/seort/55082641If you keep an eye on the Walmart site, the King might come back in stock for $15.00 - https://www.walmart.com/ip/seort/55082677 Thanks Mike.A topper can make a huge difference.

With the Serta cover, things really are going well.

We bought all Zinus 12" memory foam, 1.5" gel foam topper and a Serta cover over all of it.

I use a 1.5" memory foam topper and a Serta Black mattress protector over the hold thing.

Zinus Green Tea 12" mattress, 2" gel foam topper and Serta Black waterproof cover.

I do have 2" memory foam pads and a Serta Black water proof padded cover over the whole shebang. 

I also added a 1.5" gel foam topper and a Serta waterproof cover over it all.

Costco has the Serta for a good price and it is what we use.For towels, I would get the Grandeur Hospitality from Costco.

The best deal I have found is the Serta Black versions at Costco.

I go over that with a Serta waterproof mattress cover from Costco.You have a West Elm mattress?