[upstate]

Looking to have the shower and tub walls and shower floor cleaned and sealed. It seems some companies only do tile floors, thanks.

[Amfunny]

Why not just do it yourself. It's easy.
How to Seal grout Sealer Demonstration - YouTube

[villagetinker]

One word of caution, the product in the video, MIGHT result is a very slippery floor, something you do not want. Tile for flooring actually has a rating for how slippery it gets when wet. We used a product that was supposed to seal, WITHOUT CHANGING the color of the grout. I am not happy with the overall results, not sure if I screwed up the application, or if the product just does not work as advertised.
Many of the 'sealers' make the grout look like it is wet all the time, and you may not like that look, so be sure to ask whoever you decide to use what the final product will look like. Also, if they are coating the tile as well as the grout, make sure that they add an anti-slip product like shark grip to the floor finish.
Hope this helps.

[Waverunner]

We had this done professionally and had very bad results, including permanent damage to the tiles.

[ronsroni]

I went another way on my bathroom. I had Creative Countertops come to my home and provide an estimate. Bernie, the powner, uses a spray series... kind of looks like faux stone in a myriad of colors. You NEVER worry about scrubbing, sealing, slipping again. The finish is a comfortable, kind of pleasing sensation. Every cm of tile is sprayed with his process and it is stunning. I had my kitchen (formica) counters and bathroom counter tops done and I just did the shower walls and floor in my master. I also used his 'guy' for new shower doors. Yes, that was a tad pricey BUT the guarantee is worth it and the weight and beauty is second to none.
Look into him. you have nothing to lose and he will do the estimate lickety split. Creative Counters. His number is 352-430-4555 . best of luck!