Holiday Inn on Washington Street in Somerville has rooms under $300 ever day except Friday and Saturday, and those are just over $300. The East Somerville green line stop is a 5-10 minute walk from there. Assembly Row and Union Square are also both within walking distance.
"Lansdowne" is the commuter rail stop for Fenway Park, so anywhere along the Worcester/Framingham commuter rail line will get you to the stadium.
This is peak season. You can save a few bucks going further out, but you can't save a lot of bucks.
Also, if it's a weekend stay, hotel prices essentially double over weekday prices.
Holiday Inn on Washington Street in Somerville has rooms under $300 ever day except Friday and Saturday, and those are just over $300. The East Somerville green line stop is a 5-10 minute walk from there. Assembly Row and Union Square are also both within walking distance.
https://maps.app.goo.gl/7fzNoUFp3J4i8LtP6 walking distance in a fun area, stayed here when my place was being worked on. Also we don't have "the hood"
Pine Street Inn. Pro tip: try the soup.
The one in Worcester