I am biased, love the GF, find the exterior of the Riviera to be meh, but I’ve spent time on the real Riviera & think that clouds my opinion of Disney’s grey monolith w/ astroturf landscaping.
Will this be a park heavy trip & if so, which parks? If MK & Epcot then GF would be my choice. If Epcot & DHS then I’d choose Riviera, or better yet, see if something was open at BC or BWV so you can walk/boat to both parks rather than hassle w/ a Skyliner hop via CBR to get to DHS.
If you plan on some park time w/ some eating & socializing, I think the monorail resorts offer more choices & of course the GF grounds are much larger & there are 3 restaurants on site + Gasparillas + the Enchanted Rose. I liked the resort studios at VGF, had no noise issues & loved their central location, but they are very much just a hotel room.
I believe the VGF refurb is pretty much done & the Poly construction next door wasn’t an issue for me in the original VGF building except the walk detour over to the Poly wasn’t as scenic or convenient as it usually is, but they’ve been working on the rest of the GF, rumor has it they’ve paused the work on the lobby & will resume to finish it after the holidays. I think all of the outbuildings are pretty much finished. If they’ll be working on the lobby in March though, then I’d seriously look at Riviera, or try for BWV/BC.