Yes.

I bought this specifically for tomb of horrors and to have adventures to lead up to the tomb. I am running my first 5e game and while I built my own world, I easily slipped each dungeon into the world. My players are enjoying it greatly. You will need to build your own atmosphere at times, but adjusting for more or less players (the adventures recommend 4 players) is really easy. It adds gives some new monsters and treasures that each have their own feel to them.

My only complaint so far is that the Sunless Citadel map is small. All the other dungeons have bigger and better views of the layout. Aside from that slight problem, I haven't noticed anything else.

I would recommend to this to any DM. You get 7 adventures that have good story, a variety of hooks, and a variety of encounters (both social and combat).