I have a Godmorgen vanity in dark brown that was installed in like, 2014? Ikea sinktop as well. It’s held up great. It’s not wood, I don’t think! I initially bought the legs, but changed my mind and its floating. We installed it by putting additional wood board on top of the drywall so we could get support from studs. More on reddit.com

I think of fixtures as the stuff ... faucet, sink faucet, vanity, medicine cabinet, towel bar, toilet paper holder, lighting fixtures, etc. I don't think Ikea sells toilets/bathtubs/tile. But it looks like you could get everything else for a bathroom there.... More on bogleheads.org

I think I may have to leave this sub...some of the answer are just ridiculous! Move the plumbing! Even if you did how would you them hook up the sink? That plumbing has to get inside that cabinet somehow! If you're not handy find someone who is and remove all the plumbing until you have three things coming out of the wall. Two water supplies (hot and cold) with the valves only. Remove the supply lines from the valves. Hopefully the drain line is plastic (black abs or white pvc) so you can remove the trap entirely. You may have to cut it off and reinstall a new trap. What you'll then have is three pipes (1 large drain and two water supply pipes) that must go through the back of the cabinet. A hole saw will be needed or a jigsaw. Measure carefully twice! Mark the wall where the cabinet will sit and measure from that to determine the holes. Depending on how thick the back panel is (ikea likely very thin) you may be able to cut the needed holes with an utility knife. If you need to cut the drain to remove the trap do not cut it tight to the wall. Leave as much sticking out as possible so you can reattach the trap. Good luck! More on reddit.com

I installed Godmorgon in one bathroom and now working on the second one. In my opinion, you need to pay at least triple to get similar quality from someone else. The cabinets have 2 or 4 (depending on the size) fully working deep drawers. But here it gets complicated. The cabinets rely on the cool low profile drain system, that is bundled with the countertop. If you want a different top, you will have to buy the regular drain components, and they will interfere with the drawers. It is possible to modify the drawers, but you will lose storage capacity and it may not look good. As for the countertops themselves, I don't really care for both acrylic and porcelain options. I installed the acrylic, and I can live with it, but the sink is very shallow and it seems like it is getting harder to clean around the faucet. Despite the shortcomings, I would still use IKEA top for compatibility with the vanity. Single hole faucets are plentiful and inexpensive. More on reddit.com