T.F.
My husband is a great DIY guy but NO NO NO to tile.
Years ago, he spent a weeks vacation to install tile (2 days) look at it (1 day) the rip it all out (4 days)
It is worth hiring a pro (especially for us) because we are very nit picky on straight lines, etc.
We recently had about 100 SQ of carpet removed in a hallway and we replaced it with Travertine tile. My husband hand picked each tile from Floor Decor. We supplied 100% of materials and we paid about $500 cash to have it installed. I will say it is perfect and we love it.
He is in the process of collecting more Travertine (will need 500 pieces 16x16) for the family room and the same guy who installed the hallway tile will do the family room. He will also redo the fireplace area and we are looking at $2000 for that job. CASH
We had a quote for the hallway, fireplace and family room with the same travertine.... the company doing the install would supply everything and the quote was over $5000.