This place is in a great location if you are traveling via train - just a few blocks downhill from the Sao Bento train station. The hosts are very nice, and have put together good local tips in a notebook in several languages. They work in a store downstairs, so they are easy to reach (also via emails). This apartment is up one flight of stairs in a building that seems newly renovated.
It's nice and bright, with large windows. The walk-in shower is excellent - we appreciated having a ventilation fan to remove the steam - that seems rare in old buildings.
The small apartment could use a few more places to put your stuff - like hooks, empty surfaces to charge phones and put items you use every day - as well as a couple of lamps to use at night instead of the glaring overhead lighting. But this seems to be a fairly new listing, so hopefully these nice hosts will continue to improve this unit.
There is no laundry in the unit - they have a laundry room but you have to arrange with them to get the key, and pay 7 euros to use it (9 if you need soap), which seemed very high to us.