I had a great stay of 2 nights at Aulac, room had a beautiful view at lake of Geneva. The Ouchy district is very authentic and beautiful and great for a stroll along the lakeside. Situated next to the metro station, It was also a good location for my business trip, for which I had to travel by metro to outside the city centre.
Room quality is in good balance with the price. I would have appreciated a electrical socket next to my bed, though. Personnel was friendly and spoke English well. The building is old, so the rooms and halls are a bit noisy sometimes. I didn't stay during the weekend, so perhaps this can be an issue if you are not a tight sleeper.

arriving by train at Lausanne station you just cross the road and arrive at metro station direction Ouchy end station. at your left hand side is located the hotel au lac. friendly service and quiet and renovated room the restaurant of the hotel with fish specialities is good but rather expensive and also the breakfast. a place to remember for location and also 10 minutes walking distance of Olympic Museum.

Overlooking the lake and adjacent to the Metro, so perfectly positioned.
We had a family room, which seemed smaller than a double room would normally be. Little space down the side of the main bed and room dominated by the bunk beds. Family room yet just one tumbler and one wine glass! Bathroom tiny with quite the smallest bath I have ever seen. Water pressure fabulous but complete lack of space to hang towels for 4 people.
Staff charming and helpful, providing an extra pillow and tea bags!
We did not eat in the hotel (Snack D’Ouchy next door was perfect for breakfast) so cannot comment on the food.