[A comment, not really a question]: It is interesting that you are using the infinitive construction here after "recomendar": "...nos han recomendado poner suelo de madera"; (instead, I put: "han recomendado que pongamos suelo de madera"). My grammar book (by Butt and Benjamin - admittedly an oldish, 2004 edition) discusses the well known rule: "Use the subjunctive when there is a change of subject between the two portions of the sentence" - and it lists verbs which are exceptions. 'Recomendar' is not actually given as a clear-cut exception, but the book says that this verb is in a transitional state - where the infinitive construction is "slowly creeping into" written Spanish. It adds that it would be better for non-Spaniards to stick with the subjunctive in these particular circumstances, just to be sure..... I am sure you do have a lesson on this specific point; I look forward to seeing what it says about various verbs.