We were two friends who stayed at the apartment for 3 nights. We were very comfortable. It's a great spot, a simple but cozy and very clean apartment, has everything you could need - including some breakfast items, towels, shampoo etc., really nice! It's on the top floor, so it's quite a few steps to climb, but we didn't mind that at all. Phil was a very responsive and allround good host.
Beware that Bristol is partly on a hill and the walk from the harbour up to the apartment / Clifton is pretty steep, but it's well worth it - and there's a bus going regularly from the city center to Clifton Village, so no worries. We loved Clifton! Great vibes, and it was nice to be staying so close to it.