I stayed here for just over a month while moving to Switzerland from the UK. I have to say, everything was just perfect.
The location is great - you're right on the LEB line to central Lausanne (though I often found myself walking), the line also goes out of the city if you fancy a little day trip into the bread basket of Switzerland. You're right next to two major shops, so know need to worry about trekking anywhere for food! I regularly go running, and was easily able to pop and and plot a quick route around the neighbourhood without checking Google maps every 5 minutes!
The apartment itself is perfect, spacious, and you'll be sad to leave! I was able to work there just fine (with work from home during the pandemic), but equally when I did need to pop into the office it was easy. It has a great view of the lake, and has all the amenities you need but forget about!
The TV is a nice touch, and I spent many evenings sat on the comfy sofa watching Netflix listening to the rain on the roof :)
Finally, I couldn't have asked for better hosts, seriously they helped me so much when I arrived and didn't know what to do with myself, both with just things to do, but also assisting me in dealing with local bureaucracy! Overall, I would highly recommend this apartment to anyone looking to stay in Lausanne, be it for a holiday, or if you're transitioning to moving here like me, and need somewhere a bit more long term. Thanks!