After a second visit to Dos C Soho, I want to temper my earlier opionion somewhat. It is my old Devil Enthusiasm that renders my posts suspect, and I am sorry to gush and repent at leisure.
My first visit to Dos C was a fine experience and I was glad to be with three dining companions who eat easily at places beyond my wildest dreams in Europe and coast to coast here. We were all very pleased with our meals, shared and swapped, three fishes and one steak entree, all delicious. We did, too, love the guacamole.
My second visit was for lunch with a bud. We liked it fine. The guacamole comes "mild, medium or hot" and we ordered the third. What we got was good, but could only be described as mild, and the only discernable seasoning was salt. I am not particularly macho as far as heat, but this was only a suspicion of warmth. Our entrees, similarly, were seasoned most amazingly with salt and little else that was noteworthy. For the record, I am a salter and my pal often salts before tasting (gasp, yes, they are still out there). This was not really so much over-salted as it was one dimensional.
Other particulars worthy of note: my first experience was on a Saturday night, and we ordered fish or other departures from the standard fake-Mex fare. The second was on a Thursday lunch, and we had quesadillas. Shoulda known better? Spose so.
On an aside, we had (at the latter lunch) a "pitcher" of sangrias, which was the size pitcher my mother would have served maple syrup in on a Sunday breakfast. There was brandy in the sangria, though, which rendered it efficacious.
This is not a slam at all; just a warning that my enthusiasms can be misleading.