I like option 2 because it makes sense to fill the whole wall because of mirror issues, as you said, and I think a 56" vanity provides a nice amount of counter space. The shallow cabinet in front of the door will help the room feel less cramped, and I agree the wall mount vanity will help too. If she can live without solid surface, there's lots of formica out there that could look really good and modern without breaking the budget. I am in the process of a bathroom remodel, and also have the marble-look floors. I ended up finding a quartz remnant that is almost white, with just slight veining. It looks great with the floors. I had to look pretty hard to find a remnant, but it can be done. I'd say I probably saw an equal number of 2 and 3 cm remnants. But definitely finding granite remnants is easier, and black might be a good option.

Well, I never think wood floors are a good choice for a bathroom, so I'd go with tile. However, my own prejudice is that woodgrain tile is something that will look dated in 10 to 15 years. Many people love it, but it seems overly popular, and there are a lot of other fads that looked terrific at the time that now are also dated. I keep a file of decorating ideas, and sometimes I'm shocked at what I thought looked really great 10 years ago. My own -- admittedly biased, curmudgeonly, and opinionated -- view is that something that looks like wood should be made out of wood, something that is made out of tile should look like tile, and something that is made out of Formica shouldn't look like denim. However, you should do whatever makes you happy. I'm just suggesting that choosing a tile that is clean and classic, and that doesn't necessarily match the wood floor, is worth considering.

@Shelly Mac - I figured that you probably just were busy with “life” when you returned home - I didn’t want to bother you again re: measuring the space. I actually haven’t figured that part out yet! I do have the Godmorgon vanity in a box in my garage. I figured that I’d order two different sinks - and keep my fingers crossed that one of them worked! If you still have the measurement - I’d love if you’d post it. If not, I’ll figure it out eventually. After all, your linked directions had been more help than I would have expected to find! I think that I’m “over thinking” this whole process! My contractor is great - and I’m sure that he will know how to support the countertop. I just have a difficult time giving up “control“ in general. To be honest, I think he’s probably a bit “frustrated“ because of my micromanaging! He hasn‘t said anything (or acted as if he is) - but I think he’s used to receiving information regarding the general desired look - and then having quite a bit of flexibility with the design. In fact, that’s part of the reason my friend recommended him - she basically gave him a inspiration photo - and let him run with renovating her bathroom. It turned out very nice. But that’s not me - especially not after spending quite a bit of time reading through posts on Houzz! There are times I kinda wish I hadn‘t found Houzz - I never would have had to spend so much time selecting white ceiling/trim paint! FYI - looking at the photo of your master bathroom vanity, makes me wish I would have combined a few of the Godmorgon vanities to use in my master bathroom. I REALLY like the look of the the thicker countertop because of the mitered edge. It really makes a lot of sense to take the $$ saved by using the Godmorgon cabinets + custom doors vs. an entire custom made floating vanity - and use it towards a really nice looking (thick) countertop!

Check your dimension on current vanity. What is now standard does not always fit our older homes. A friend found their 1960's vanity with not the same depth as the replacement one they bought. I thought I would just replace the yellow cultured marble top in the kids' bath only to find it is a 64 inch width while standard is 60 or 48.