That's possible, and would be pretty interesting!
Although they could still sprinkle in some mid-series off-days. Theoff-days could stagger the games for TV broadcast purposes (so they could get more games in prime time, and maybe more on desirable days of the week).
While possible to go with no off days (and that would play to the Twins' advantage with their depth, I would argue), with the primary revenue for owners coming from broadcast revenue, I would agree that they will schedule off days in order to maximize the number of prime time games they can broadcast. I do hope they skip the stupid off day between games 4 and 5 in a five-game series.
Additionally, if they are in a bubble using only a couple of stadiums, they'll have to allow for plenty of transition time between games, which makes it a little harder to stack games. That's part of the argument for having the first round at local sites.