I know you are not 100% sure about the reviews. Someone is satisfied with anything (too low standard), while someone complains on literally anything and everything!
About this house and the host Romain, however, trust me the house is SUPER clean and equipped very well (with VERY nice appliances - especially the high-end coffee machine!), and the host Romain is extremely responsive and willing to help you with anything. I'm an EXTREMY frequent traveller (travelled over 25 countries repeatedly) using air bnb, hostel, business hotels and 5star resorts, and this trip to Romain's place was one of my best experiences. It's not Four Seasons or Mandarin Oriental, but it's amazingly clean to the highest standard (not even a piece of dirt we could find), with super host and wonderful location.
Only thing to note in advance is that, if you plan to sleep on the sofa bed in the living room, ear plugs can be helpful on a Friday or Saturday night, IF you're sensitive to sound when sleeping. There's small bar nearby (which is good!) and you can hear people talking (not 'shouting' like in a pub, though).
Would I come back? ABSOLUTELY!