I was visiting Lisbon for 6 days in September 2012 with 5 friends. I personally did not meet Bruno because I arrived a bit later than my friends. My friends met him though, and they told me was friendly. helpful and only good stuff. He left us some fruit and cookies in the fridge to start the trip with :)
The apartment is great, lots of space and no problem for the six of us to accommodate. We greatly appreciated the three bathrooms!
Location is extremely good, pretty much in the centre. There are taxis running outside all the time and a tram station is located right outside as well.

Overall the experience was great, great price, great location and a great host. I really recommend this place and I'll definitely stay here again if I visit Lisbon again :)