I have porcelain tile in my master bath and acrylic in the kids bathroom. The porcelain tile hasn't been hard to clean. I specified 12" square tiles to minimize the amount of exposed grout, and keep a large scrub brush in the shower so I can scrub off any little spots while I'm in the shower, as soon as I see them.
I thought the acrylic would be easier for my kids to clean (they keep up their own bathroom). It is one piece, shower and tub, with no fake tile texture. The kids use softscrub to clean it but the soap scum build up is pretty thick and never comes completely off. There are also brown dirt and water stains that are hard to remove. My son who is in charge that bathroom is pretty diligent about cleaning.
My recommendation is to stick to a real tub and tile in the master bath. Most acrylic looks cheaper and doesn't wear as well. To save money, you can buy a coated steel tub instead of porcelain covered cast iron, then use large tiles on the side walls. This will lower the labor costs to install. Perhaps use a row of smaller decorative tiles near the top if the large tiles look too big and boring to you. Get a rod and pretty shower curtain to save money and cleaning, rather than paying for a glass shower door.