We had a great stay at Ana's. Everything was better than expected.
Location is great. The area has everything you need. Mini grocery down the street. Small park with cafe down the street (and larger park with cafe no more than a five-minute walk away). There are a lot of hip (non-touristy) wine bars, coffee shops, and restaurants down the street (and more touristy bars and restaurants no more than a 10-minute walk away). We walked everywhere all week and don't think that Baixa and Chiado were more than a 20-minute walk away). We were really pleased with this location. Location is always a crapshoot when you're reserving a place without understanding the area, but you should feel good about this one. Oh, and the subway is nearby, too (maybe 10-minute walk and Lisbon's public transportation is excellent).
Apt is great. Everything is new and clean. The kitchen has everything you need (fridge, dishwasher, oven, microwave, toaster, nespresso machine, dishes, utensils). One review mentioned that the apt is on street level. This is true, but the windows are new and have both shutters and drapes. This wasn't a problem for us. The apt is on a side street in any case.
Communication was great. The place is very professionally run and every step of the process was easy. At every step of the process _I_ was the weak link. Ana and her partners will take care of you.
Overall, great experience. If we return to Lisbon, we will re-book this apt.