Good hosts. The apartment is large and pleasantly spacious but has one considerable drawback: there is a half-step up in the bathroom (I assume for drainage because the plumbing has issues) which is quite dangerous. Three times I nearly broke my foot falling up or down it; it is not the sort of thing one looks for or expects and an advance warning should really occur. There also was no coffee, though there was a coffee maker. Clothespins would be much appreciated, as there is a washer and a clothesline right outside the windows but nothing to attach anything to it with. Also, some means of keeping the windows open would be helpful; if one opens several to get cross-breezes they slam shut.
The location is quite good--near Pasteis do Belem, Jeronymos, the tower, and a beautiful tropical botanical garden which is a MUST. Several good restaurants in the area, including one quite cheap one (with very good food) recommended by Pedro. Lisbon is *very* hilly, so be ready for a long uphill walk home from most things--but that would be the case anywhere in the city, probably.