Parc et Lac’s location can’t be beat, it’s right in front of Lake Geneva and is a few min walk from Montreux train station. However, you’ll either need to take the stairs or elevator to the street below to get to the hotel.
The receptionist at the hotel was also very friendly and the room itself has good amenities like soft towels, kettle, tea/coffee and hair dryer. My main complaint though is that the portable air conditioner was woefully inadequate, couldn’t cool the room despite the small size. It was unbearably hot and very difficult to sleep, thankfully it was just for one nite. Also, there was no laundry in the bldg, you would need to send it out in the morning if you wanted it done.