We stayed in a Blueground apartment for 90 days when we moved to the bay area.
Overall, we were very happy with the stay. The apartment was in a great location. Appliances and furniture were in perfect condition. Blueground support was generally responsive.
If I had to suggest any improvements, communication from the sales team could have been quicker. We wanted to extend our stay twice, and the sales team typically took around a week to respond to simple queries. For the second extension, by the time they got back to our query, the apartment was booked for a couple days by someone else and we had to move to a different apartment.