Joel was an incredibly accommodating host. When booking he answered all of my questions and even suggested some of his other properties that might better suit my family's needs. He arranged a car to pick up my family at the airport and had his manager waiting for them on the sidewalk when they arrived. When were ran short on towels he sent someone over with extra and even helped us arrange car with an excellent driver to take us on some day excursions (do ask if you need help!). The flat is conveniently located less than 5mins from Minquan W MRT station and is close to many shops and restaurants. It is however on a very busy road that can get a bit loud.
A few things to note. The second bedroom is a traditional tatami room with a raised floor. The mattress is quite thin and on the floor and there isn't room for luggage. The walls of both rooms are also glass so if the lights are on in one room it may disturb others. They are also not sound proof. This is not a problem if everyone has a similar sleeping schedule but for our family it was a bit challenging. The kitchen has only a few basic supplies and only three mugs. We ended up drinking wine from rice bowls (which were very pretty)! The bathroom is very clean but quite small. The shower requires stepping into a small tub with a high edge. My 70 year old mother had to use two stools to get in and out. Not a problem for younger people. Also, the gym that is advertised is not functioning. It is a large space but the machines appear to be out of order. You need to access it from the lobby.
Generally a decent location to base yourselves when in Taipei. Joel is really fantastic to communicate with. Just be aware of the above things.