"Theo and his brother, who live just down the hall from the flat, were MOST accommodating, flexible, and friendly -- even sliding our arrival a day due to airline delay, without fuss or extra charge. They greeted us warmly when we arrived, speaking impeccable English, and even "rescued" us at the front door after we returned from dinner our first night, and had forgotten how to bus ourselves in.
Communications with Theo beforehand via email was easy and prompt, and our taxi from the airport found the address easily. The apartment is down a little side street off Rue de Siene, within easy walking to numerous trendy shops and good, reasonably-priced restaurants. Also within walking distance to Musee d'Orsay and The Louvre. The flat itself was clean and cozy, sleeping three easily (a twin bed and a full bed). We did not use the little kitchen, except for tea, but it was there if we needed it for a longer stay. Bathroom was clean, although towels seemed a bit old and worn.
We had been warned from previous comments that this is a fifth-floor walkup, but stairs were well-lit and do-able. This flat is NOT for anyone needing a lift/elevator. Being on the fifth floor also gave us a nice view out large windows of the city and sky over the rooftops, reducing any feeling of narrowness of the flat. It also made it very quiet, putting us well above the noise of the neighborhood below. Being on a side street also helped in this regard. Wireless Internet worked flawlessly and speedily. Would certainly stay with Theo again. Great location, but Theo and his brother (and even their mother, who made our checkout effortless) were the real high points of our stay."