Sven was a great host and very accommodating. He was quick to respond to our mails and kindly allowed us to leave our bags in the flat for a couple of hours after check-out and pick them up later.
We enjoyed staying in Sven's flat. It had everything we needed for our short trip to Lisbon. It is in a quiet neighbourhood and just a short walk downhill to the centre. The start/terminal of tram 28 is conveniently nearby so you can avoid the crowds that get on further down the line.
There is a little shop right across the street where you can buy some basic necessities and fresh bread rolls in the morning for breakfast.
The flat is located up a hill so there are quite a few steps to get up and then up a road. We tended to go out in the morning and come back in the evening as we did so much walking around Lisbon during the day that we couldn't face the uphill trek to the flat more than once a day. For anybody with reduced mobility it may be a little bit of a struggle.