Udaipur is a big city and you can always visit the world renowned udaipur palace.
fathe sagar lake, lake pichola and other historical places. the weather in this time of the year is hot so beware of it. ps: if you are going to visit palace or any of the historical places please do spend some on the certified guides which will make your experience much much better
Yes you can go This week after april there will.be too hot.
Must visit Udaipur City Palace ( Almost will.take 4 hr from inside ) then Karni mata ka temple ( Here you need to go by ropeway) , Saheliyon Ki bari ( Evening garden) and then in night go to Lake pichola with some grrat restro near about it. Next day you can go Jagdish temple, Fateh Sagar Lake, Vintage Old Car Museum.
Udaipur is place to travel for 365 days. However it will be real hot in coming days. And one can’t ignore that except few parts in North India. I would suggest to take ride of Lake Pichhola and must have dinner at Upre or 1559 AD