Here are some suggestions:
Lausanne Guesthouse & Backpacker:
Room charge: CHF 30.- to 135.- (20.- to 88.- €) per day
Contact: +41 21 601 80 00
Hôtel du Marché:
Room charge: CHF 70.- to 155.- (47.- to 105.- €) per day
Contact: + 41 21 647 99 00
Hôtel des Voyageurs:
Room charge: CHF 120.- to 290.- (81.- to 195.- €) per day
Contact: +41 21 319 91 11
Hôtel City:
Room charge: CHF 120.- to 400.- ( 72.- to 239.- €) per day
Contact: +41 21 320 21 41
Hôtel Alpha-Palmiers:
Room charge: CHF 190.- to 550.- (114.- to 329.- €) per day
Contact: +41 21 555 59 99
Lausanne Palace:
Room charge: CHF 420.- to 2980.- (280.- to 1986.- €) per day
Contact: +41 21 331 31 31
Beau-Rivage Palace:
Room charge: CHF 470.- to 3500.- (315.- to 2335.- €) per day
Contact: +41 21 613 33 33
Ok Logements:
Flat: from CHF 1000.- (597.- €) per month
2 rooms: from CHF 1950.- (1165.- €) per month
3 rooms: from CHF 2600.- (1553.- €) per month
4 rooms: from CHF 3550.- (2120.- €) per month
5 rooms: from CHF 3650.- (2180.- €) per month
Contact: +41 21 323 55 16