It's a two bedroom apartment on the last floor without elevator. The house is old and the staircase is narrow so it can be difficult to get there for some people. But, personally, we had no problems with it. We only had problems with low ceilings in the bathroom.
The house is located in historical city centre, it was easy to find restaurants, shops or get to Sintra.
The apartment looks clean, but we saw cockroaches there a few times.
There were almost everything that we needed (like washing machine, dishes), except kettle and corkscrew.
There were no key box, so we had to plan our check in with the host in advance.
The host was very kind to let us check out a few hours later for free.