Bruno's appartement is in the heart of Alfama, and this is an excellent spot to explore Lisboa! The appartement is very nice, super clean, and offers pretty much all amenities a traveller might need.
Alfama obviously also brings a bit of culture - that means that sensitive persons should definitely bring ear plugs, but I wasn't affected at all.
The Stairs to the appartment are amazing and *very* steep. Big suitcases and people with feet or leg problems will have difficulties, for sure.
However, those two points - Noise and Stairs - are nothing which I can hold against the appartment - in fact, for us, it rather added to charm.
I highly recommend the appartment and Bruno as a host. Just keep in mind that Lisboa is hilly in general, and that people have culture!
Enjoy!