Cambridge
Staying in Cambridge puts you within a short walk of the university gates. The Charles Hotel, 130 m away, is the closest four-star option, with a spa, fitness center and parking. Harvard Square Hotel sits 190 m out, and the Hip 5Br In Cambridge By Sonder is 330 m away with a kitchen and free wifi. For a longer but still easy walk, Sheraton Commander Hotel is 650 m from campus, while Hotel Veritas is 780 m out.
Boston
A handful of listings sit across the river in Boston, roughly 890 m from the university. Luxury Apartments by Hyatus Boston Cambridge is a four-star property with a pool bar, fitness center and kitchen, and The Atlas Hotel, also four-star, offers a spa, car parking and a gymnasium. Both keep you on the Boston side of the Charles while remaining walkable to Harvard, which suits guests who want the city side of the river.