It will dissolve a fine layer of grout on the surface and leave you with fresh new grout.

This seemed kinda low to me, but he said he has a "solid surface guy" who can get solid surface counters for the same price as laminate.  

Once the chemicals attach to a surface, it chemically bonds with it.  

We usually use TSP to clean because we are painting and that helps prep the surface well.

You are talking about wall tiles here - I would have to see a picture, but I can't figure out in my head how you would have trimmed that out without it looking like crap or how it would meet surfaces properly, i.e. sink, etc. 

Wipe down all hard surfaces surfaces with a disinfectant product.

I'm dealing with three challenges: 1) roach residue in the kitchen cabinets 2) floor under the carpet is kinda gross 3) still not the best smell in the unitI contacted a company about what they would do and they wanted $150 for just an inspection and estimated treating the place (cleaning all surfaces, ozone machine, etc.) would cost thousands. 

Would remove the canopy, add a natural stone surface over existing concrete, add a cedar arbor or patio covering (something simple as shown below), add shutters, add landscaping.

More troublesome it is an owner occupied unit (not just someone's bad renters that may move on)...So if I got another fourplex, I would put on my detective hat and actually research adjoining and nearby properties, and their owners, very well.

I don't personally have experience but reviews on the interweb and speaking with a co-worker who used them make it sound like its a durable/cost effective solution to extend the life of those surfaces.