This is a great apartment that is highly recommend. Good location, right by a metro although we mostly walked where we visited, and with good, easy stops for breakfast nearby.
There's a double and a twin room both with AC and en suite, and our shower was powerful and warm. Plenty of room for two couples. The kitchen and living area are compact but big enough to plan your day and cook and share a quick meal.
The only issue we encountered was that the wifi was slow. Just about ok for maps and a bit of basic research but my phone's 3G was faster so we used that instead. As such we didn't ask our host to see if the speed could be improved, so perhaps it's something that could be easily fixed. If that's important to you, check before booking.