My daughter & I stayed at Istaravshan for 5 nights. On checkout, they had trouble finding the copy of our passports and later couldn't provide us with the police registration because they said that the systems were down. They said they would Whatsapp it to us. On chasing this 24 hours later, they Whatsapp'ed us the police registration of some other guests! We are trying to figure out who to contact now about our registration (Uzbek police?) in case there are problems when leaving the country.
The apartment was otherwise fine, although not recommended for a long stay as the kitchen was of very little use. Location was great, opposite the Tashkent City park. Breakfast at the Holiday Inn was great.