My husband and I, plus our two young children, stayed in Ben's apartment for 9 nights. It is in a fabulous location, right near Notre Dame. The apartment itself has amazing views over the surrounding buildings/streets and has been beautifully renovated. The bed/sofa bed were very comfortable, the bathroom is a good size, large shower complete with a heater for the soft, fluffy towels. The apartment had everything we needed; it was very clean, light/bright, had great WiFi, a good sized lounge room, comfortable couch, a washer/dryer combo, large fridge and cooking facilities - although we didn't cook! It was spacious enough for a family of four, and would be more than adequate for a couple. The apartment is about 100 metres from Notre Dame. It is in a lively, touristy area so, for example, people were eating at the restaurants below until quite late into the night. Most of inner Paris is noisy like that and it didn't bother us. It is close to the Metro, which we used regularly but we found we also walked to many places because the location is so central. There isn't a lift and as the apartment is on the 5th floor - there are 96 steps to the top. It was good exercise!
Ben is a terrific host. He is reliable and prompt when communicating on email, and always available via phone. He emailed a comprehensive list of restaurants/supermarkets in the local area. He organised for the cleaner to come in half way through our stay and that was just part of the deal. The apartment has a feeling of generosity about it, little things like soap, tea/coffee, paper towel, books, nice plates/cups etc. You can tell Ben and his wife have thought hard about how to make the apartment high quality, cosy, comfortable, and modern (It's in a 400 year old building). Check out the old shared squat toilet behind the door in the stairwell as you approach the final flight of stairs! We really enjoyed our time staying here and would highly recommend it to other travellers.